What do the Japanese steakhouse restaurants use to make the fire?

I have always wanted toknow what they use to make the fire in front of you...? All i can tell is that they put down this oil looking liquid, then set it on fire..? Sometimes they will touch it with their fingers and carry the fireto another spot..? Is it Sake or oil...?What do the Japanese steakhouse restaurants use to make the fire?
They use cooking oil first then vodka (vodka is almost flavorless).





Instruction to Light the Volcano

1

Pour enough vegetable oil to form a thin layer of oil into the bottom of the volcano onion.



2

Squirt 80 proof or higher vodka into the volcano. A very small amount is required because the vodka only lights the volcano. The oil sustains the flame.



3

Use a lighter to light the vodka, which evaporates through the top of the volcano. The vodka will light the oil, which sustains the flame.



4

Extinguish the volcano by waiting for the oil to evaporate or move the volcano off of the heat source with a fork or spatula.