A Chilli potato is a members-only food item that can be created by using a chilli con carne topping on a potato with butter. Doing so requires a Cooking level of 41, and grants 15 Cooking experience.
Making all ingredients from scratch and combining them into a chilli potato provides 165.5 cooking experience.
The chilli potato heals 140 life points when eaten, the same as a potato with butter and the same as chilli con carne, and, along with the Tuna Potato, may be the only food where the combination of items actually results in less healing than keeping them separate. In comparison, a bass heals 130 life points and provides 130 Cooking experience for far less work. As a result, the chilli potato is not a commonly cooked or eaten item unless received as a monster drop.