Burnt fish (herring)

Burnt fish is the result of accidentally burning either raw herring or raw mackerel. Cooking herring requires 5 Cooking and stops being burnt at level 41, and mackerel requires 10 Cooking and stops being burnt at level 45.

The burnt fish 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 fish stackable.

During RuneScape Classic, pike had the same shape as herring and mackerel, so burning raw pike would result in this kind of burnt fish. Because pike now has the same shape as trout, salmon, and cod, burnt pike becomes burnt fish (trout) instead.