Things You'll Need
Instructions
Put on a pair of sturdy rubber gloves before handling the blowfish. Many parts of a blowfish are poisonous and potentially deadly, including its skin.
Choose a surface to clean the blowfish on. Lay an old rag over the surface and place the blowfish on the rag.
Cut into the blowfish behind the head with a knife. Do not make a clear cut all the way through the fish. Instead, cut just barely into the skin in a full circle and pull the skin off the body from there.
Run water over the body to remove the jelly-like substance coating it. You can also use salt for this purpose.
Gut the fish. Use caution and precision during this task. Do not puncture the internal organs, as they contain the most poison in the blowfish's body. If you do puncture an organ, do not attempt to eat the contaminated blowfish; instead, throw it away and start over on a fresh blowfish.