Breadcrumbs are one of the ingredients used in making a raw fishcake. Players can make raw fishcakes during and after the Pirate Pete part of the Recipe for Disaster quest. Breadcrumbs are made by using a knife on some bread.
Note: Before cutting the bread into crumbs, you have to talk to the Chef in Lumbridge first. If not a message will say "Nothing interesting happens."
Trivia
- The emote for making breadcrumbs has the same emote as fletching something.