According to the data of the Ministry of Civil Affairs, the single adult population in China has reached 240 million in 20 18, of which more than 77 million adults live alone. It is estimated that this number will rise to 92 million in 20021year. "One-person food" can provide fast-paced, convenient and free dining atmosphere for office workers, which is recognized by consumer groups. How to ensure that the nutritional value and flavor of semi-finished dishes are not affected after heating? Healthy, delicious and diversified tastes are the research and development directions of many food processing enterprises. In order to better meet the market demand, most food enterprises will choose to add Spenger's yeast extract. The extract of Spenger's yeast itself is an excellent flavor carrier. Only a small amount can improve the flavor and freshness, which is helpful to improve the overall umami taste of food, enrich the taste, reduce the salt by 30% and enhance the overall flavor.