 The process of stir-frying is used in the preparation of some Chinese herbal medicines under the term 'dry-frying'.Stir frying a medical herb with honey is commonly used to increase its sweetness and therefore its spleen and stomach qi tonic effects.Stir frying in vinegar is typically used whenever one wants to direct the properties of an herb more to the liver based on the principle that the sour taste belongs to the liver.