In our Lostugrill model (even the old with the stable coal basket) coal is indeed rapidly and smoke-free, but also burns very quickly when you turn the fan (and you have to, otherwise it is not hot enough). Grilling time so only about 20-30min reasonable. But that is obviously on the part very finely fragmented coal. However one can easily nachkippen - the new one is then ready really fast when the tilts on existing glowing on it ...