Burnt swordfish

Burnt swordfish is the result of accidentally burning a raw swordfish while attempting to make a swordfish. Cooking a swordfish requires 45 Cooking, and burning it will become less common with a higher Cooking level. They stop being burned at 86 Cooking.

The burnt swordfish has no use whatsoever, although you can unsuccessfully attempt to eat it. Like most other burnt food, it is tradeable to other players but not on the Grand Exchange.

A hidden update on 4 March 2013 made all burnt swordfish stackable.