The invention discloses strawberry
sour milk and a preparation method thereof. The strawberry
sour milk comprises the following components in percentage by
mass: 90%-92% of
raw milk, 1.75%-5.97% of
purified water, 1%-2% of white granulated
sugar, 1%-2% of strawberry juice, 0.5%-0.8% of
sodium carboxymethyl cellulose, 0.2%-0.3% of
pectin, 0.1%-0.2% of
sodium tripolyphosphate, 0.7%-0.8% of
citric acid, 0.01%-0.02% of
lactic acid, 0.1%-0.5% of
sodium citrate and 0.02%-0.03% of
sucralose. The preparation method comprises the following steps: S1, preheating the
raw milk, adding the white granulated
sugar, the sodium
carboxymethyl cellulose, the
pectin, the
sodium citrate, the sodium tripolyphosphate and the
sucralose, and stirring to obtain a mixture; s2, homogenizing the mixture, and performing
pasteurization to obtain a homogenized material; s3, dissolving
citric acid in
purified water to prepare an acid solution; adding an acid solution into the homogenized material by using a spray head; after the acid liquor is added,
lactic acid is added firstly, and then strawberry juice is added; and S4, performing UHT sterilization on the product obtained in the step S3 at 137 DEG C for 4-5 seconds, and performing sterile filling to obtain the strawberry
sour milk. The strawberry sour milk disclosed by the invention is relatively high in
protein content and also has a relatively long
shelf life.