From another web site. This is news to me:

Other Choices to Consider

There are alternatives to the single-use propane cylinder for camping and hobby use. White gas is a very inexpensive, readily available fuel. For those who want to use propane fuel, some of the larger camping stores/outfitters sell small propane cylinders that can be refilled. Also, there is a new gas fuel available for camping use: a mixture of propane and butane, sold in an all-aluminum canister. When the canister is empty (it won't support a flame) it can be easily recycled. This fuel mix burns hotter than propane, which means faster cooking and brighter lanterns. It costs about the same, and is becoming readily available.

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