1, bubble method. Use rapeseed oil or sesame oil (virgin olive oil is also acceptable), add a proper amount of Lithospermum, and soak for more than two weeks. The disadvantage of this method is that it takes the longest time. The advantage is that the loss of medicinal components of Arnebia euchroma is the least.
2, steaming method. Soak a proper amount of Arnebia euchroma in rapeseed oil or sesame oil for more than 1 hour, and then steam in a steamer for 30 minutes to 1 hour. When steaming oil, prevent water vapor from entering the oil and cover the oil container. The method has short time consumption and less loss of medicinal components of Radix Arnebiae.
3. Frying. Boil with rapeseed oil or sesame oil, grab Lithospermum, put it in, and let it cool. The advantage is that it takes the shortest time The disadvantage is that the loss of medicinal components of Arnebia euchroma is the biggest.