Cause analysis: the oil temperature is not hot enough.

Correct operation: 1 small puffer fish as raw material. Wash the puffer fish and change the knife. Cut it along both sides of the fish bone. Do not cut it off. Add cooking wine and some salt, then add ginger foam and soy sauce. Stir them with chopsticks and marinate them for 15 minutes. Put oil in the pan, heat the oil to 175 ℃, glue the fish with flour and put it into the oil pan, deep fry until both sides are golden yellow, take it out and put it on a plate. Features: crisp outside and tender inside.