If we want the fried tofu balls to be hollow, we'd better wait until the oil temperature in the pot is high, then pour the tofu balls into the oil pan and fry them with high fire, and be careful not to turn over just after cooking, which may lead to breaking.
If you want to make tofu balls, you need to boil tofu in boiling water for a period of time, then take it out and cool it and crush it by hand, and then add seasonings such as onion, ginger, pepper, eggs and salt to the tofu and stir it evenly.
Then, knead the stirred balls into small balls and roll them in a bowl filled with bread crumbs, so that the surface of the balls is covered with bread crumbs for later use. Finally, heat enough oil and pour them into the meatballs for frying.