drinks

Abstract

To provide a beverage that contains 2-ethyl-3,5-dimethylpyrazine at a certain concentration but shows improvement in the flavors derived from the materials contained in the beverage, offering excellent palatability.SOLUTION: A beverage contains 2-ethyl-3,5-dimethylpyrazine of 1-15 ppb, and contains cis-3-hexene-1-ol of 2-200 ppb. Preferably, the content of cis-3-hexene-1-ol is 2-75 ppb. Preferably, the beverage contains extract from roasted grain.SELECTED DRAWING: None

Description

[Technical Field]

[0001] The present invention relates to beverages. [Background technology]

[0002] In order to improve palatability, beverages such as grain teas are required to have a clean aftertaste, improve thirst quenching properties, and be designed to allow the flavor of the ingredients to be fully appreciated. In addition, by incorporating ingredients other than grains and creating a rich variety of flavor designs, it is possible to improve the product's appeal and palatability.

[0003] However, when beverages contain extracts derived from natural ingredients, it is not uncommon for undesirable ingredients that reduce palatability to be mixed in during the design process. For example, some ingredients in grain tea beverages contain 2-ethyl-3,5-dimethylpyrazine, an aroma component that imparts a strong almond-like odor. This aroma component not only detracts from the flavor inherent in the grain tea beverage ingredients, but also reduces the refreshing aftertaste, thereby impairing the thirst-quenching properties required of grain tea beverages.

[0004] Therefore, preventing the contamination of beverages such as grain tea drinks with 2-ethyl-3,5-dimethylpyrazine is important in improving flavor and thereby increasing palatability. However, since 2-ethyl-3,5-dimethylpyrazine is a component contained in major grain-based ingredients, it is not easy to prevent contamination.

[0005] For example, Patent Document 1 discloses a technology of using 2-ethyl-3,5-dimethylpyrazine as a tea flavor, but does not disclose how to reduce the aroma derived from 2-ethyl-3,5-dimethylpyrazine to improve the flavor and increase palatability. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Japanese Patent Application Laid-Open No. 2005-143467 Summary of the Invention [Problem to be solved by the invention]

[0007] The present invention has been proposed in light of the above circumstances, and aims to provide a beverage that is highly palatable by improving the flavor inherent in the ingredients contained in the beverage, even if it contains 2-ethyl-3,5-dimethylpyrazine at a certain concentration. [Means for solving the problem]

[0008] As a result of extensive research, the inventors discovered that the above problem can be solved by adding a specific proportion of cis-3-hexen-1-ol to a grain tea beverage that contains, for example, an extract derived from a grain material and a certain concentration of 2-ethyl-3,5-dimethylpyrazine, and thus completed the present invention.

[0009] (1) A first aspect of the present invention is a beverage containing 2-ethyl-3,5-dimethylpyrazine in a content of 1 to 15 ppb and cis-3-hexen-1-ol in a proportion of 2 to 200 ppb.

[0010] (2) A second aspect of the present invention is a beverage according to the first aspect of the present invention, which contains the cis-3-hexen-1-ol in a proportion of 2 to 75 ppb.

[0011] (3) A third aspect of the present invention is a beverage according to the first or second aspect of the present invention, which contains an extract of roasted grains.

[0012] (4) A fourth aspect of the present invention is a method for improving the flavor of a beverage, which comprises adding cis-3-hexen-1-ol to a beverage containing 2-ethyl-3,5-dimethylpyrazine at a content of 1 to 15 ppb so that the content is 2 to 200 ppb.

[0013] (5) A fifth aspect of the present invention is a flavor improver for beverages, which contains cis-3-hexen-1-ol and is added to a beverage containing 2-ethyl-3,5-dimethylpyrazine at a content of 1 to 15 ppb so that the content of cis-3-hexen-1-ol is 2 to 200 ppb. [Effects of the Invention]

[0014] According to the present invention, even if a beverage contains 2-ethyl-3,5-dimethylpyrazine at a certain concentration, the flavor inherent in the ingredients contained in the beverage can be improved, and a beverage with excellent palatability can be provided. DETAILED DESCRIPTION OF THE INVENTION

[0015] Specific embodiments of the present invention (hereinafter also referred to as "present embodiments") will be described in detail below. Note that the present invention is not limited to the following embodiments, and can be modified as appropriate within the scope of the present invention. In addition, in this specification, the expression "X to Y" (X and Y are arbitrary numerical values) means "at least X and at most Y."

[0016] ≪1. Beverage≫ The beverage according to this embodiment contains an extract derived from natural materials such as grains, and contains 2-ethyl-3,5-dimethylpyrazine at a content of 1 to 15 ppb. Specifically, the beverage contains cis-3-hexen-1-ol at a content of 2 to 200 ppb.

[0017] In this way, by designing the beverage to contain cis-3-hexen-1-ol at a specific ratio, the strong almond-like odor caused by 2-ethyl-3,5-dimethylpyrazine contained in natural ingredients such as grain materials can be suppressed, improving the flavor of the ingredients and resulting in a beverage with excellent palatability. Note that in this specification, the "strong almond-like odor" is sometimes referred to as an off-odor.

[0018] Here, cis-3-hexen-1-ol is an aroma component, and as a result of research by the present inventors, it was found that by adding a specific ratio of cis-3-hexen-1-ol to a beverage containing a certain concentration of 2-ethyl-3,5-dimethylpyrazine, the cis-3-hexen-1-ol can mask the strong almond-like odor derived from 2-ethyl-3,5-dimethylpyrazine, thereby effectively suppressing the off-flavor. It was also found that adding cis-3-hexen-1-ol not only suppresses the off-flavor and improves the refreshing aftertaste (refreshing feeling) of the beverage, but also improves the taste and refreshing feeling of the beverage.

[0019] The type of beverage is not particularly limited, but includes beverages containing roasted grain extracts. Since 2-ethyl-3,5-dimethylpyrazine is an aroma component particularly contained in some grain-based materials, examples of the beverage include grain tea beverages containing roasted grain extracts. Note that any beverage containing a roasted grain extract may be used, and the beverage is not limited to tea beverages such as grain tea. For example, the beverage may include functional beverages, dairy beverages, coffee beverages, carbonated beverages, fruit beverages, etc., containing a roasted grain extract.

[0020] Furthermore, when a beverage contains an extract of roasted grains, it includes not only a liquid containing an extract obtained by extracting a certain type of roasted grain, but also a liquid obtained by mixing that extract with an extract of another plant, or a liquid obtained by adding additives to these liquids, or a liquid obtained by dispersing dried versions of these liquids.

[0021] Furthermore, when the beverage is a tea beverage, the variety, place of origin, harvesting time, harvesting method, cultivation method, etc. of the plant from which the extract contained in the beverage is derived are not particularly limited. The type of plant is also not particularly limited, and examples that can be used include barley, Job's tears, brown rice, Habu tea, corn, black beans, soybeans, adzuki beans, sweet potato, loquat leaves, tea leaves, kelp, Kumazasa, sesame, persimmon leaves, Gynostemma pentaphyllum, mulberry leaves, Reishi mushrooms, wolfberries, mandarin orange peel, yuzu peel, Eucommia ulmoides leaves, perilla leaves, Houttuynia cordata, plantain, gymnema, rooibos, Rahma, dandelion, peppermint, mulukhiyah, dried orange peel, ginkgo, pine needles, lotus, olive, young barley leaves, Cassia capita, Xiangyang grass, Angelica keiskei, mugwort, and evening primrose. Among these, barley, Job's tears, brown rice, Habu tea, corn, adzuki beans, loquat leaves, yuzu peel, dandelion, Cassia capillaris, etc. can be preferably used. These may be used alone or in combination of two or more.

[0022] As mentioned above, among these plants, grain-based ingredients such as barley, Job's tears, brown rice, Habu tea, corn, black beans, soybeans, and adzuki beans often contain 2-ethyl-3,5-dimethylpyrazine, making it particularly effective in beverages containing extracts of these grain components.

[0023] [2-ethyl-3,5-dimethylpyrazine] The beverage according to this embodiment contains 2-ethyl-3,5-dimethylpyrazine. 2-Ethyl-3,5-dimethylpyrazine is an aroma component derived mainly from the ingredients that make up the beverage. The content of 2-ethyl-3,5-dimethylpyrazine in the beverage is in the range of 1 to 15 ppb.

[0024] As described above, 2-ethyl-3,5-dimethylpyrazine is a component that imparts a strong almond-like odor and reduces the refreshing aftertaste (refreshing feeling) of a beverage, reducing its palatability. For this reason, its content in a beverage is preferably low; however, it is inevitably present due to, for example, the grain-based ingredients that make up the beverage. On the other hand, as described in detail below, the beverage according to this embodiment contains cis-3-hexen-1-ol at a specific ratio, and this cis-3-hexen-1-ol effectively suppresses the off-odor caused by 2-ethyl-3,5-dimethylpyrazine. Specifically, whether the content of 2-ethyl-3,5-dimethylpyrazine in the beverage is 1 ppb or more or 3 ppb or more, the off-odor can be effectively suppressed. The upper limit of the 2-ethyl-3,5-dimethylpyrazine content is preferably 15 ppb or less.

[0025] The content of 2-ethyl-3,5-dimethylpyrazine in a beverage can be measured using a gas chromatograph mass spectrometer (GC-MS). GC-MS measurements can be performed, for example, under the conditions shown in the Examples below. Alternatively, if the concentration in each ingredient is known, it can also be calculated.

[0026] [cis-3-hexen-1-ol] The beverage according to this embodiment contains cis-3-hexen-1-ol, an aroma component that acts to mask the unpleasant odor of 2-ethyl-3,5-dimethylpyrazine, which is contained in the beverage as a result of the ingredients.

[0027] Although there is no particular limitation on cis-3-hexen-1-ol, a commercially available compound can be used and blended into the beverage. Alternatively, natural materials containing cis-3-hexen-1-ol or extracts thereof can be blended into the beverage to contain cis-3-hexen-1-ol.

[0028] The content of cis-3-hexen-1-ol in the beverage is in the range of 2 to 200 ppb. By setting the content of cis-3-hexen-1-ol in the beverage within this range, it is possible to effectively mask and reduce unpleasant odors, such as the heavy almond-like odor derived from 2-ethyl-3,5-dimethylpyrazine. Furthermore, by including cis-3-hexen-1-ol within this range, it is possible to improve the refreshing feeling and deliciousness of the beverage, thereby further increasing the palatability of the beverage.

[0029] The lower limit of the cis-3-hexen-1-ol content is 2 ppb or more, preferably 5 ppb or more, more preferably 10 ppb or more, and particularly preferably 20 ppb or more. Preferably, by including it in such a range, the masking effect of the off-odor derived from 2-ethyl-3,5-dimethylpyrazine can be further enhanced. On the other hand, if the cis-3-hexen-1-ol content is too high, the off-odor masking effect is further enhanced, but the taste and refreshing feeling of the beverage may be impaired. From this point of view, the upper limit of the cis-3-hexen-1-ol content in the beverage is 200 ppb or less, preferably 150 ppb or less, more preferably 100 ppb or less, and particularly preferably 75 ppb or less.

[0030] The content of cis-3-hexen-1-ol in a beverage can be measured using a gas chromatograph mass spectrometer (GC-MS). GC-MS measurements can be performed, for example, under the conditions shown in the Examples below. Alternatively, if the concentration in each raw material is known, it can also be calculated.

[0031] [Other ingredients] The beverage of this embodiment may contain other ingredients and additives commonly used in general beverages, as long as they do not impair the intended effects. The amounts of these ingredients and additives may be adjusted appropriately depending on the desired effects. Specifically, the beverage may contain various additives, such as antioxidants, pH adjusters, flavorings, various esters, organic acids, organic acid salts, inorganic acids, inorganic acid salts, inorganic salts, colorants, emulsifiers, preservatives, seasonings, and quality stabilizers.

[0032] [container] The beverage according to the present embodiment can be filled into a container to produce a packaged beverage. The container may be any sealed container known in the beverage industry, and may be appropriately selected and used depending on the distribution format and consumer needs. Specific examples include sealed containers made of glass, plastic (polyethylene terephthalate (PET), polyethylene (PE), polypropylene (PP), etc.), paper, aluminum, steel, etc., or composite or laminated materials thereof. Transparent (including translucent) containers are particularly preferred. Transparent containers may be entirely transparent or partially transparent.

[0033] ≪2. Beverage manufacturing method≫ The beverage according to this embodiment can be produced using any conditions and methods commonly used in beverage production. For example, cis-3-hexen-1-ol is added to a beverage containing 2-ethyl-3,5-dimethylpyrazine at a concentration of 1 to 15 ppb so that the concentration is 2 to 200 ppb. Other optional ingredients may also be added to prepare the beverage.

[0034] The content of 2-ethyl-3,5-dimethylpyrazine in the beverage may be adjusted by any suitable method, and cis-3-hexen-1-ol may be added by a conventional method.

[0035] In producing beverages, for example, a method is exemplified in which a prepared extract or the like containing predetermined amounts of each component and a specific amount of cis-3-hexen-1-ol are added sequentially or simultaneously and mixed by stirring or the like. The order in which the components are mixed is not particularly limited. In the case of tea beverages such as grain tea beverages, for example, a method is exemplified in which multiple plants are mixed in advance, subjected to an extraction process to obtain an extract, and then cis-3-hexen-1-ol is added to the obtained extract to achieve a predetermined concentration.

[0036] Cis-3-hexen-1-ol can be added as a flavoring (e.g., a chemically synthesized compound) or as an extract of a food material containing cis-3-hexen-1-ol.

[0037] The produced beverage can be filled into a container to form a packaged beverage, and may be sterilized as appropriate before or after filling into the container. The sterilization method is not particularly limited, and examples include conventional plate sterilization, tubular sterilization, retort sterilization, batch sterilization, autoclave sterilization, etc.

[0038] 3. How to improve the flavor of beverages As described above, according to the beverage of this embodiment, even when it contains 2-ethyl-3,5-dimethylpyrazine, the strong almond-like odor caused by 2-ethyl-3,5-dimethylpyrazine can be effectively suppressed by blending cis-3-hexen-1-ol at a content of 2 to 200 ppb, thereby improving the flavor inherent in the ingredients that make up the beverage, resulting in a beverage with excellent palatability.

[0039] Therefore, this can be defined as a method for improving the flavor of a beverage by adding cis-3-hexen-1-ol to a beverage containing 2-ethyl-3,5-dimethylpyrazine at a content of 1 to 15 ppb. That is, this can be defined as a method for improving the flavor of a beverage by adding cis-3-hexen-1-ol to a beverage containing 2-ethyl-3,5-dimethylpyrazine at a content of 1 to 15 ppb so that the content is 2 to 200 ppb.

[0040] ≪4. Beverage flavor improver≫ In addition, cis-3-hexen-1-ol can be defined as a flavor improver that suppresses the heavy almond-like odor of 2-ethyl-3,5-dimethylpyrazine and improves the flavor of the beverage by adding it to a beverage containing 2-ethyl-3,5-dimethylpyrazine at a content of 1 to 15 ppb.

[0041] Specifically, the beverage flavor improver contains cis-3-hexen-1-ol and is added to a beverage having a 2-ethyl-3,5-dimethylpyrazine content of 1 to 15 ppb so that the cis-3-hexen-1-ol content is 2 to 200 ppb.

[0042] The beverage flavor improver can be produced by any method employed in the art or by a method with appropriate modifications. When the flavor improver contains components other than cis-3-hexen-1-ol, the type and content of the components can be appropriately designed depending on the desired effect. [Example]

[0043] The present invention will be explained in more detail below by showing examples, but the present invention is not limited to the following examples in any way.

[0044] <Test 1: Verification by adding 2-ethyl-3,5-dimethylpyrazine> [Production of standard and test samples] An extract was obtained by extracting 10 g of roasted barley (L*=41) with 30 volumes of water at 90°C. The L* value (roasting level) was obtained by grinding a room temperature sample for 20 seconds using a blender (IFM-300, manufactured by Iwatani Corporation) and then measuring the ground sample using a spectrophotometer (SE7700, manufactured by Nippon Denshoku Industries Co., Ltd.) by the reflection method.

[0045] To the resulting extract, 0.3 g of sodium L-ascorbate, 0.1 g of L-ascorbic acid, and 0.2 g of sodium bicarbonate were added, and the mixture was adjusted to 1000 g with purified water to obtain a prepared solution. The prepared solution was UHT sterilized, diluted 10-fold, and aseptically filled into PET bottles to obtain a sample (Reference Product 1). The 2-ethyl-3,5-dimethylpyrazine concentration in the resulting Reference Product 1 (barley extract) was 0.54 ppb.

[0046] Then, 2-ethyl-3,5-dimethylpyrazine was added to the obtained reference product 1 to give concentrations of 0.75 to 20 ppb, and test samples to be used for evaluation were prepared.

[0047] [2-Ethyl-3,5-dimethylpyrazine content analysis] The content of 2-ethyl-3,5-dimethylpyrazine in Reference Standard 1 and the test samples was measured using gas chromatography-mass spectrometry (GC-MS) under the following conditions. Specifically, 100 μL of the test sample to be analyzed was placed in a vial (10 mL capacity) and introduced into a GC-MS / MS (Agilent Technologies) using the Multi Volatile Method (MVM) with a Gestell MPS. A calibration curve was prepared using the standard addition method, with cyclohexanol used as the internal standard. (GC-MS analysis conditions) Equipment GC: Agilent 7890B GC System (Agilent Technologies) MS: Agilent 7000D GC / MS Triple Quad (Agilent Technologies) Fully automated volatile component extraction and introduction device: MPS Robotic Pro / DHS / TDU2 / CIS4 (Gestell) Collection tube (adsorbent): Tenax TA, Carbopack-B & Carbopack-X Column: DB-WAX UI (20 m x 0.18 mm, film thickness 0.30 μm) (Agilent Technologies) Injection method: Splitless Carrier gas: He (1.0 mL / min) Transfer line: 250℃ Heating program: 40°C (hold for 3 minutes) → 5°C / min → 240°C (hold for 7 minutes) Precursor ion > Product ion (CE (collision energy)) :2-ethyl-3,5-dimethylpyrazine 135>135(5V) :cyclohexanol 82>67(5V) Ionization method: EI ·Quadrupole temperature: 150℃ Ion source temperature: 230℃

[0048] [About sensory evaluation] A sensory evaluation was conducted by five expert panelists on the prepared reference product 1 and each test sample. Specifically, the sensory evaluation was conducted by comparatively evaluating "taste," "refreshing feeling," and "strength of almond-like aroma" against reference product 1. Each evaluation score was calculated as the average of the evaluation scores given by each panelist according to the following evaluation criteria. In this evaluation, the score of reference product 1 was used as the reference value (4 points). Note that "taste" was evaluated as "high level of preference based on flavor," and "refreshing feeling" was evaluated as "refreshing feeling of the aftertaste of the beverage." Furthermore, "strength of almond-like aroma," as the item name suggests, was evaluated as "strength of the almond-like aroma."

[0049] The "taste" and "refreshing feeling" were evaluated on a 7-point scale based on the following criteria. (Evaluation criteria) 7 points: very good, 6 points: good, 5 points: somewhat good, 4 points: equivalent to the standard product, 3 points: somewhat bad, 2 points: bad, 1 point: very bad

[0050] The "strength of the almond-like scent" was evaluated on a 7-point scale based on the following evaluation criteria. (Evaluation criteria) 7 points: Very strong, 6 points: Strong, 5 points: Slightly strong, 4 points: Equivalent to the standard product, 3 points: Slightly weak, 2 points: Weak, 1 point: Very weak

[0051] [result] Table 1 below shows the concentrations of 2-ethyl-3,5-dimethylpyrazine in the reference product 1 and the test samples, as well as the results of the sensory evaluation. Regarding the "taste" and "refreshing feeling" in the evaluation, the higher the score, as per the above-mentioned evaluation criteria, the higher the evaluation. Regarding the "strength of the almond-like aroma," the lower the score, as per the above-mentioned evaluation criteria, the lower the score, and the higher the evaluation.

[0052] [Table 1]

[0053] As shown in Table 1, as the concentration of 2-ethyl-3,5-dimethylpyrazine increased, the "strength of the almond-like aroma" increased, and the "taste" and "refreshing feeling" were poor. Therefore, it can be seen that when 2-ethyl-3,5-dimethylpyrazine is contained in a beverage, especially at a concentration of 1 ppb or more, an unpleasant odor such as a heavy almond-like smell is perceived, which impairs the flavor of the ingredients and reduces the palatability of the beverage.

[0054] <Test 2: Verification by adding cis-3-hexen-1-ol> [Production of standard and test samples] Reference sample 2 was prepared by adding 2-ethyl-3,5-dimethylpyrazine to the reference sample 1 obtained above to a concentration of 5 ppb. Reference sample 3 was prepared by adding 2-ethyl-3,5-dimethylpyrazine to the reference sample 1 to a concentration of 15 ppb. The cis-3-hexen-1-ol concentrations in reference samples 2 and 3 were 0 ppb. Cis-3-hexen-1-ol was added to the reference sample 2 obtained to the concentration shown in Table 2 below to prepare each test sample (Comparative Example 1, Examples 1 to 4). Cis-3-hexen-1-ol was added to the reference sample 3 obtained to the concentration shown in Table 3 below to prepare each test sample (Examples 5 to 8).

[0055] The content of cis-3-hexen-1-ol in Reference Sample 2, Reference Sample 3, and each test sample was measured using gas chromatography-mass spectrometry (GC-MS) under the following conditions. Specifically, 10 mL of the test sample to be analyzed and 3.5 g of sodium chloride were placed in a vial (20 mL capacity), sealed with a septum-equipped cap, and introduced into a GC-MS (Agilent Technologies) using the solid phase microextraction (SPME) method. A calibration curve was prepared using the standard addition method, with cyclohexanol used as the internal standard. (GC-MS analysis conditions) Equipment: GC: 6890A (G1530A) GC System (Agilent Technologies) MS: 5973N MSD (Agilent Technologies) Fully automated volatile component extraction and introduction device: Multipurpose sampler MPS2 (Gestell) SPME fiber: DVB / CAR / PDMS (manufactured by Sperco) Pretreatment conditions: Incubation at 60°C for 10 minutes Extraction: 60℃, 20 minutes Desorption 5 minutes Column: DB-WAX UI (30 m x 0.25 mm, film thickness 0.25 μm) (Agilent Technologies) Injection method: Splitless ·Inlet temperature: 240℃ Carrier gas: He (1.0 mL / min) Heating program: 40°C (hold for 2 minutes) → 8°C / min → 240°C (hold for 10 minutes) Ion source temperature: 240℃ ·Quadrupole temperature: 150℃ ·Quantitative ion (cis-3-Hexen-1-ol): 67 ·Quantitative ion (cyclohexanol): 57

[0056] [About sensory evaluation] A sensory evaluation was conducted by a panel of five experts on the prepared Reference Product 2, Reference Product 3, and each test sample. Specifically, the sensory evaluation was conducted by comparatively evaluating the "taste," "refreshing feeling," and "strength of almond-like aroma" against Reference Product 2. Each evaluation score was calculated as the average of the evaluation scores given by each panelist according to the same evaluation criteria as in Test 1. In this evaluation, the score of Reference Product 2 was evaluated as the reference value (4 points).

[0057] [result] Tables 2 and 3 below show the 2-ethyl-3,5-dimethylpyrazine concentrations and cis-3-hexen-1-ol concentrations in Reference Product 2, Reference Product 3, and each test sample, as well as the sensory evaluation results. Regarding the "taste" and "refreshing feeling" evaluations, as per the above-mentioned evaluation criteria, the higher the score, the higher the evaluation. Regarding the "strength of almond-like aroma," as per the above-mentioned evaluation criteria, the lower the score, the lower the perceived strength, and thus the higher the evaluation.

[0058] [Table 2]

[0059] [Table 3]

[0060] As shown in Table 2, Examples 1 to 4 received a higher rating for "strength of almond-like aroma" compared to Comparative Example 1, indicating that off-odors were suppressed. Furthermore, particularly in Examples 1 to 3, in addition to the effect of suppressing off-odors, the effects of improving "taste" and "refreshing feeling" were also observed, demonstrating superior palatability. Furthermore, as shown in Table 3, Examples 5 to 8, in which the 2-ethyl-3,5-dimethylpyrazine concentration was 15 ppb, also suppressed the almond-like aroma and exhibited superior palatability.

Claims

1. A beverage containing 2-ethyl-3,5-dimethylpyrazine at a content of 1 to 15 ppb, Contains cis-3-hexen-1-ol at a rate of 2 to 200 ppb; Beverage.

2. The cis-3-hexen-1-ol is contained in an amount of 2 to 75 ppb. The beverage of claim 1.

3. Contains roasted grain extract, The beverage according to claim 1 or 2.

4. A beverage containing 2-ethyl-3,5-dimethylpyrazine at a content of 1 to 15 ppb, Add cis-3-hexen-1-ol so that its content is 2 to 200 ppb; A method for improving the flavor of a beverage.

5. containing cis-3-hexen-1-ol, The cis-3-hexen-1-ol is added to a beverage containing 2-ethyl-3,5-dimethylpyrazine at a content of 1 to 15 ppb so that the content of the cis-3-hexen-1-ol is 2 to 200 ppb. A flavor improver for beverages.

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