It usually takes about forty minutes, and sometimes it is prepared one day in advance, and it will be done in half an hour the next day. Our family often drinks mutton soup in the morning, but it is better in the cold winter. Cook the sheep's head in the water one day in advance, simmer it slowly, put the cooked meat in the basin, keep the broth, and take out the mutton and cut it and boil it with broth the next morning.