Why not use blisters? Without blisters, it will be very hard. Method of frying broad beans with crispy skin: Take Douxin Crisp 1.2- 1.5 Jin, dissolve it in cold water, add it into 250 Jin of cold water, stir well, then add broad beans 100 Jin and stir again. Soak for 2-5 days. After taking out, cleaning, cutting, drying the surface moisture, frying in a pan to crisp, expanding at medium temperature first, and then frying at low temperature. Note: Be sure to fry the moisture in the broad beans to prevent them from getting damp and brittle during shelf life.