The ambience of a flickering fire is one of the most basic human enjoyments. We spent years developing and bringing to life a product that will bring this enjoyment into your home in the most accessible way possible. With just 5 ounces of 70% or 91% isopropyl rubbing alcohol, you will have roughly 50 minutes of burn time. With soot only where the flame touches (in a ventilated area), no carbon monoxide, and safe to cook over.