Sweet grass root is licorice. Glycyrrhiza glabra is a very widely used traditional Chinese medicine, which has the effect of tonifying the spleen, moistening the lungs and relieving coughs, detoxifying the fire, easing the pain and harmonizing the medicines, and so on. Modern medical research shows that licorice has antiviral, anti-inflammatory, hepatoprotective effects, can be used to treat spleen deficiency, cough and asthma, sore throat, carbuncles and sores. It is not harmful to the human body to make wine and drink it. I hope my answer is helpful to you.