Functional floating yoghourt and preparation method thereof

The functional floating yoghourt comprises the following raw materials: milk, collagen liquid, concentrated milk protein liquid, acerola cherry cheese sauce, single cream, functional sugar, dietary fibers, concentrated milk, a composite food additive, a nutritional agent and a composite leavening agent, the preparation method comprises the following steps: (1) weighing the raw materials; (2) heating half of the milk; (3) adding other raw materials except for the balance of milk, collagen liquid, nutritional agent and composite leavening agent, uniformly mixing, and stirring for dissolving; (4) adding the nutritional agent and the balance of milk and collagen liquid, preheating, and homogenizing; (5) sterilizing and cooling; (6) adding a composite leavening agent for fermentation; and (7) cooling, aging, congealing, puffing, filling and hardening. The functional floating yoghurt is high in nutrient content, and compared with plant or animal cream, the functional floating yoghurt is low in fat content, low in e