Steps:
1. Pericarpium Citri Tangerinae is soaked in water, and then the capsules are scraped;
2. Soak half a catty of red beans in water for a few minutes;
3. Put half a catty of red beans, one or two pieces of rock sugar, and Xinhui dried tangerine peel110 into a pressure cooker and cook until the pot rings, turn off the fire, stew for 5 minutes, then turn off the fire and cook until the pot rings, and repeat for 5 minutes.