Sterno? Brand butane fuel cartridges are long-lasting, working for either two hours on a high setting or four hours on a low/simmer setting in a portable stove. They have an added odorant for scent detection and added safety. Their universal design works with all stoves and culinary torches that accept 8-ounce cartridges. They are also UL/cUL listed. Fuel Type: Butane; Physical Form: Liquid; Capacity (Volume): 8 oz; Capacity (Weight): .80lb.