Air-Fryer Goose-Fat Roast Potatoes

The British roast potato is a small national obsession. It's the item that gets argued about at family dinners ("Goose fat or beef dripping?" "Floury or waxy?" "How fluffy on the inside?"). Done well, it's one of the great pleasures of cooking — shatteringly crisp at the surface, cloud-light in the middle, deeply golden. Done badly, it's a sad pale knob of starch.

The technique is non-negotiable on three points. First: choose Maris Piper or King Edward potatoes — high starch, floury varieties. Yukon Gold works in the US (slightly less floury but acceptable). Don't substitute waxy red potatoes; they don't fluff. Second: parboil for 10 minutes until the edges are starting to break, then shake the colander hard to rough up the surfaces. This is what makes the outside catch the fat and crisp. Third: get the fat very hot before the potatoes go in.

Goose fat is the traditional choice for a reason — it has a high smoke point, a rich flavour, and renders the potatoes a particular mahogany colour that nothing else quite matches. Duck fat is the substitute when goose isn't around. Beef dripping is the budget option. Don't use olive oil here — wrong flavour, wrong performance at temperature.

The photo shows them in their natural habitat: a dark cast-iron serving bowl, piled, with visible sea salt flakes and rosemary needles, the kind of golden-amber colour that means "yes, these are right." This is the side dish of Christmas Day, Sunday roast, or any night you want potatoes to be the actual headliner instead of an afterthought.