Butate is very versatile can be used on low for chocolate fondue, medium for cheese and high for broth and oil fondues.

butane fondue unit
This is a new style fondue fuel unit. It is a one piece design that stores butane in the tank. It offers the most adjustability of any fondue fuel unit. The butane is odorless and safe to use.

butane fondue fuel cannister
Butane fuel: refill canisters are available at most hardware stores and come with a variety of "tips" to fit a range of household butane devices like lighters and cooking torches.
Uses: Any fondue, cheese, chocolate, oil or broth. It is the best choice for oil and broth.
Heat Duration: High, 1 hour, medium 3 hours, low, 9 hours. This can vary depending on the size of your butane unit.
Other Features: butane is safe and odor-free and and provides excellent control over the amount of heat produced.