Sweet grass root is licorice. Glycyrrhiza uralensis Fisch is a widely used traditional Chinese medicine, which has many functions, such as invigorating spleen, benefiting qi, moistening lung, relieving cough, purging fire, detoxicating, relieving pain, and harmonizing various medicines. Modern medical research shows that licorice has antiviral, anti-inflammatory and liver-protecting effects, and can be used to treat spleen deficiency, cough and asthma, sore throat and carbuncle. Soaking wine is harmless to human body. I hope my answer is helpful to you.