Whole leeks straight onto the coals, or under a grill turned as high as it goes. They should look ruined. The outside is a jacket and it comes off in one piece.
Inside is soft, sweet and slightly smoky. Hazelnuts toasted and crushed rough, a spoon of harissa loosened with oil, and nothing else.
What goes wrong
Taking them off early because they look burnt. They are supposed to look burnt.