You can skip the butter. According to the query of Gourmet Jiewang, Dongyin Gong Tang can be used without butter, and Dongyin Gong Tang is mainly used for appetizing and relieving boredom. "Winter Yin" means hot and sour, and "Gong" means shrimp, which translates into hot and sour shrimp soup. Lemon leaves, citronella, peppers and shrimps are mainly used, and the soup combines sour, hot, sweet and salty taste with strong spices. The main ingredient is Thai lemon, which is a unique seasoning fruit in Southeast Asia and has the effect of promoting appetite. The dietary fiber in the staple food can also promote intestinal peristalsis.