Coconut shell charcoal briquettes contain different ash color. Ash color mainly depends on the source of the coconut shells.
The best for shisha, hookah briquettes is light, white color of ash. If the ash is dark – it means that in this charcoal mixed not only coconut shells but also wood.
Ash collected after burning charcoal briquettes for 2 or 2.5 hours. Ash shall be very light and consist of small granular. But if ash is too white – it is also the sing of using chemicals or other materials that makes it bright.