Coal maintenance (affectionally known as CM) is the art form of maintaining steady coal heat to a shisha.
Most people will say it is the most crucial part of a good shisha session and there really is no excuse for bad CM.
Constant delivery of fresh coals to the porcelain in correct positioning is paramount. This is generally applied throughout the heart of the Middle East of by 'Coal Ninjas' and is the true sign of a good shisha bar.
Exquisite coal maintenence