The invention discloses low-
calorie milk tea based on
plant-based milk and a preparation method of the low-
calorie milk tea, and relates to the technical field of
food processing. The preparation method comprises the following steps: S1, mixing the almond milk and the oat milk according to a volume ratio of (25-35): (65-75) to obtain mixed
plant milk; s2, mixing the tea leaves with
purified water according to a ratio of 1: (45-55) (w / v), performing extraction, and performing
filtration so as to obtain cold-extracted tea soup; carrying out ultrasonic treatment on the cold-extracted tea soup for 8-12 minutes under the condition that the temperature is less than or equal to 10 DEG C to obtain tea soup; s3, heating the tea soup to 60 DEG C, and adding a
sweetening agent to obtain a
sweetening agent-tea soup solution; the
sweetening agent comprises
erythritol,
stevioside and L-
arabinose; and S4, cooling the sweetening agent-tea soup solution to 25 DEG C, adding the mixed
plant milk into the sweetening agent-tea soup solution, stirring, and homogenizing to obtain the low-
calorie milk tea based on the plant-based milk. The preparation method is simple, and the prepared milk tea is low in calorie, good in stability and good in
flavor.