How long your hookah session will last depends on many variables including the amount of tobacco used, pack method, hookah bowl material, and style as well as the type and amount of hookah charcoal. Usually, 20g of shisha tobacco using 2-3 natural coconut charcoal cubes will produce an hour long session. If your shisha is still producing smoke and flavor, you can add more coals. Quick lighting charcoal may be shorter.