Brown kefir yogurt, milk-containing beverage and preparation method thereof

The invention discloses a brown kefir yogurt, a milk-containing beverage and a preparation method thereof. Raw materials of the milk-containing beverage include 18-50% of the brown kefir yogurt, 0.4-0.8% of a stabilizer, 0.015-8% of a sweetening agent, 0-0.3% of an acidity regulator and 37.5-79% of water. The milk-containing beverage is prepared through the following preparation method including steps of: (1) dissolving the sweetening agent and the stabilizer in water, performing sterilization at 90-95 DEG C for 5-10 min and performing a cooling process to 5-20 DEG C for obtaining a sweet water basic material; and (2) uniformly mixing the brown kefir yogurt and the sweet water basic material with addition of the acidity regulator or not to enable a pH value to reach 3.5-4.1; performing homogenization, cooling the mixed solution to 5-15 DEG C, and performing a sterile filling process. The milk-containing beverage with the brown kefir yogurt has a flavor of kefir, is free of fat, is refreshing in mouthfeel, having a unique mouth-stimulating feel, contains probiotics, is 1-1.5% in content of proteins and is 3.5-4.1 in pH value.