FOGO Super Premium Lump Charcoal (35lbs)
Two birds with one stone here, breaking advice from both Dennis and Fogo.
Dennis describes the issue. A primary use of our KK these days is high temperature baking (bread, pizza, Focaccia di Recco). Dennis let me buy a gas burner; he figures I know what I'm doing. The solution is to use a very large charcoal such as the above Fogo. Yes, all surfaces light, but the surface-area-to-volume ratio makes for a nice window to bake at pizza temperatures before the fuel exhausts itself.
With more typical charcoal the fire burns too hot and fast, as Dennis explains. He's right; ask me how I know!