Eco-Friendly Bioethanol Fuel - 1L. ???? BIOETHANOL. Ideal for bioethanol firepits, indoor fireplaces, and Trangia spirit burners. Experience the unmatched quality of our Eco-Friendly Bioethanol Fuel. Whether you’re warming up your living space or creating an inviting atmosphere in your outdoor gatherings, trust the choice that thousands have already made since 2012.