That depends on the type of BOSKA fondue burner you have. A fondue burner without fuel comes standard with our fondue sets. You can use the fondue burner in three different ways:

1. With a fire gel.
2. With a liquid fuel such as methylated spirit.
3. With a fuel paste in a ready-to-use container. 

This simple demonstration video explains how you can fill and light your fondue burner with different types of fuels. Did you purchase our Fondue Fuel Safe & Disposable? Then you don't need to add any additional fuel because these burners are pre-filled.