Stropharia rugoso-annulata flavored beverage and preparation method thereof

The invention discloses a stropharia rugoso-annulata flavored beverage and a preparation method thereof. The flavored beverage is mainly prepared from the following raw materials: a stropharia rugoso-annulata extracting solution or a stropharia rugoso-annulata mixed extracting solution, a preservative, stevioside, erythritol, table salt, citric acid, sodium citrate, edible essence and a thickening agent. Heating the weighed stropharia rugoso-annulata extracting solution or mixed extracting solution, then sequentially adding a preservative, stevioside, erythritol, table salt, citric acid, sodium citrate, edible essence and a thickening agent, and uniformly stirring to obtain a semi-finished product of the beverage; and sequentially carrying out high-temperature sterilization and sterile cold filling on the obtained semi-finished product of the beverage, disinfecting a filling bottle by adopting ultraviolet rays before filling, and filling to obtain the stropharia rugosoannulata flavored beverage. The strophari