Method 1: It is necessary to control the humidity around the garlic. You can choose to put the fried salt into a breathable small bag next to the garlic, so that the salt can absorb the moisture in the air. Method 2: Take out the purchased big ban and sun it for 2 to 3 days, taking care not to spill it on the ban head. The drying room should also be aware of the large waste, so that the air can be evenly dried. After drying, you can take out the scissors and cut off the excess roots. The skin that has surfaced due to the sun also needs to be removed thoroughly.