Raw material formula: 500 grams of watermelon seeds, peanut oil, 10 grams of refined salt, 25 grams of licorice, 3 grams of quicklime, 50g. Production method: 1. Pour the quicklime into a large bowl, add 500 ml of water, mix well, and mix into lime. water, then pour in the watermelon seeds and soak them for 4 to 5 hours, then take them out, rinse them with clean water, and remove the mucous membrane on the shells. 2. Put the refined salt and licorice into a pot, pour 150 ml of water, boil over high heat for 10 to 15 minutes, filter out the licorice, and mix it into licorice salt juice. 3. Take an iron pot, add 4 grams of peanut oil and place it on a high fire until it is cooked. Pour in the washed watermelon seeds and stir-fry continuously. When the water in the watermelon seeds is almost dry, add 3 grams of peanut oil and stir-fry over a slow fire. When the watermelon seeds are cooked, add 3 grams of peanut oil for the third time, stir-fry briefly and remove from the heat. 4. Pour the fried watermelon seeds into the licorice salt juice while they are hot, cover and simmer for 1 to 2 hours. Product Features: The black shell is crystal clear, the licorice aroma is rich, and it has the effect of relieving cough and asthma. It is an ideal curative flavored snack.