Three different alcohol bottles. The one in the center is for measuring the amount to be added to an alcohol stove. It is marked at 1/4 and 1/2 Oz. The blue is gelled methanol made by mixing Yellow HEET with a Sterno type fuel. The dilution results in a gelled fuel that will flow, but not to easily. The pink is commercial gelled Ethanol fire starter with about 25% Yellow HEET added. It is still pretty viscous. Both do well for priming liquid fueled stoves.