we have gauze. this is made of cotton. what class of fire is that? a. >> we have some fire. we have air. we have heat. we have a fire going. if i went in like that what did i just do? >> smoth erred it. simple; right . remember the hot water heater, we say don't store gasoline in your garage? so, gasoline gives out vapors, if we heat this up. not that you have to heat the gasoline. if you store gasoline near a hot water heater the vapors alone will catch fire. the vapors travel and caught. you don't have to actually light something like a candle, you don't actually have to touch something. we will add, more, make more effect, here. you got cherries jubilee. how do you put this out? [laughter]. put the lid? what if you don't have a lid? cookie sheet. >> very good. that's a good one. cover the thing, take it off the burner. take it off. do i immediately open it again? no. you already put it out leave it alone and whether or not it is the cheapest fire extinguisher you can buy? baking soda. have a couple boxes of baking soda, near the stove. cut the top off so it's ready to go.