Fires in small utensils containing cooking fats can be extinguished by smothering with Asbestos blanket or door mat (which has been wetted first!).
The Fire Blanket is a highly flame-retardant blanket that can be used either to extinguish a small fire directly or to wrap around a person to safely escape a burning home or building. The optional high visibility fluorescent fire blanket bag is a completely hemmed nylon, reinforced vinyl bag with a carry handle that features 4 mounting holes with brass grommets plus a hook and loop closure that opens in one quick motion.
In other words we can define it as:
A fire blanket is a piece of fire extinguishing equipment or gear designed to extinguish a small fire or any fire at its initial stage. It is a blanket-like sheet typically made of wool or specially woven fiberglass fabric treated with flame-resistant chemicals. Some old models used to be made of asbestos, but are no longer produced as the use of such material poses significant health risk