Need. According to the inquiry, the kitchen showed that the rotten vegetables it cooked were washed. The vegetables with roots were about seven or eight centimeters long, cut into small pieces to make ribs, washed and cut into pieces for later use, and the width was two or three fingers wide. You don't need to fry at will. After frying, put it in a pressure cooker and ribs prepared in advance, blanch it with boiling water, skim off the floating foam, then scald it for a while, take it out, rinse it all and put it in the pot. Add appropriate amount of water, cover the high-pressure pot cover and wait for water.