Poison karambwan, formerly known as poorly/partially-cooked karambwan, is a food item that is obtained when a raw karambwan is cooked incorrectly. Cooking one has no level requirement and grants 80 Cooking experience. This is a fast but expensive method for low-levelled players to train cooking.
Eating poison karambwan will damage the player for 5 poison damage, however it only damages once and not constantly, unlike most other poison. However, this trait can be advantageous: if a player uses a poison karambwan with a pestle and mortar, they create karambwan paste which can be used to poison spears and hastae.
A raw karambwan can also be thoroughly cooked by a player turning it into a cooked karambwan, after completing the Tai Bwo Wannai Trio quest and talking to Tinsay in his hut to learn how to cook it thoroughly.