Gel fuels are a type of fuel that comes in a thick, gel-like consistency. They are often used for cooking, heating, and in portable stoves. Gel fuels are popular because they are easy to handle, produce a steady flame, and are less likely to spill compared to liquid fuels. These fuels are typically made from a combination of hydrocarbons and additives that create a gel. Commonly used in camping and outdoor activities, gel fuels can be found in products like Sterno and other similar brands. They are considered a safer alternative to traditional liquid fuels, as they reduce the risk of flare-ups.