Cut off the sides of each cauliflower and cut the middle into three thick slices.
Mix the olive oil with the honey, garlic, lemon juice and rind.
Coat the cauliflower with the honey mixture and grill each side for about 8 minutes on the grill rack of the The Bastard.

Stay alert, as the honey may burn.
If necessary, spread the slices again with the remaining honey mixture and serve with parsley, walnuts, sea salt and chilli flakes.