Materials: 1 braid, 2 tomatoes, 1/2 onions, 1 carrot.

Steps:

1. Wash the pigtails, blanch them to remove fishy smell, and take them out for later use.

2. Peel carrots and onions, remove the film, wash them, and cut them into pieces or slices.

3. Wash the tomatoes, draw a few shallow lines on the surface, blanch, peel and cut into pieces.

4. Mix the ingredients of 1, 2 and 3, put them into fennel bag, add 6-7 bowls of water to boil, simmer for about 30 minutes, and season with salt.