1. Wash onion, ginger and garlic. Prepare all the ingredients for making fish-flavored tofu.
2. Cut the tofu into large pieces, break the eggs, add salt and mix well, cut the onion into sections, and slice the ginger and garlic.
3. Dip the tofu in the egg liquid, put it in a hot oil pan, and fry until both sides are golden. Put it aside for use.
4. Take another pot, add bean paste and stir well, then add onion, ginger and garlic and stir fry.
5. Pour the fried tofu into the pot, then add sugar, soy sauce, vinegar and salt, and finally add water instead of tofu. When the soup is thick, add monosodium glutamate and stir well.
6. put it in a plate and sprinkle with chopped green onion.