When I first prepared this wonderful method of cooking fennel, I was gob-smacked. It is that good. I am not given to hyperbole, and I get irritated when recipes suggest that “this is wonderful” or “there is no better way to eat this”, but I am almost inclined to use such superlatives here. OK, I’ll resist, but I urge you to try it.
There really is no need to remove outer layers from the fennel (unless they are really, really dirty). Don’t cut too much away from the bottom (if any), or the bulb will fall apart.