Ingredients: 500g oxtail, onion 1, carrot 1, yam, tomato and mushroom 5.

Accessories: salt.

1. Wash and drain the oxtail, and fry it directly in the pan until both sides are caramel.

2. Add chopped onion pieces and stir-fry until the onions are soft.

3. Add boiling water or cold water, put it in a soup pot and simmer for about an hour. If there is no soup pot, a rice cooker will do.

4, tomatoes cut into small pieces, mushrooms cut into four petals, carrots and yam cut into hob blocks.

After one hour, skim the oil from the soup, put all the ingredients in the pot, cook for another hour, and add the right amount of salt according to the taste.