To burn gel fuel, you remove the paper label from the outside of the can, pry open the lid (similar to a paint can), and set the can in an appropriate place inside the fireplace. Then, you simply light the gel with a match or a lighter. Most fireplaces can accommodate up to three cans that can burn at the same time.

Is it safe to roast marshmallows over gel fuel?

IMPORTANT: Some people may be concerned that Sterno isn’t safe to use to roast s’mores, but according to the company, it is perfectly safe to roast food. Sterno ethanol gel burns safe and clean and is endorsed by Green Restaurant Association.

How do you turn off a gel burner?

You can extinguish the flame by using the cap as a snuffer. Turn the cap over and slide it over the can opening to put out the flame. Wait until the canister has completely cooled before you remove it and replace the cap, though it’s good to note that liquid fuels maintain a cooler canister than the gel variety.