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Pommes de terre au fourRustic baked potatoes

Starchy spuds, oiled and salted before they go in, baked until the centers read 96 °C — then split and finished with brown butter, crème fraîche, and chives. Crisply salted skin, fluffy inside, no paper bag required.

Origin: Restaurant (European bistro)
Difficulty: 2 / 5
Servings: 2
Prep: 5 min
Cook: 1 hr 10 min
Total: ~1 hr 15 min

Inspired by

The bistro's pommes de terre au four — the split spud loaded with brown butter and crème fraîche, served beside the steak as the slow side. This plate is a copy of it, from the kind of restaurant where the fat is the side's last move.

Why the restaurant does it this way

The bistro splits the potato and loads it with fat because the potato is the carrier, and the brown butter plus crème fraîche is the dish in its role. The skin is the other half: oiled and salted before baking, it comes out crisp and salty, and the inside comes out fluffy — one side, two textures. And the clock is long (an hour or more, no work at the counter): that is what lets it sit beside the steak on the plate, the one slow side to the kitchen's fast ones.

Technique notes

The difference between a proper baked potato and a boiled potato in a jacket is temperature and time. A home oven runs at 180–200 °C — below the Maillard window but above the point where the interior starch sets into a paste. The oil you brush on before baking does what the fat does in a fry: it transfers heat to the skin and carries the salt into it. The pan heat article explains the browning scale this sits below, and sauces 101 explains why the brown-butter and crème fraîche finish is what actually makes the dish.

Equipment

Baking tray
Sharp small knife or fork
Instant-read thermometer, or a sharp knife to test the center
Small saucepan for the brown butter

Ingredients

2 large starchy potatoes (Russet or King Edward), 250–350 g each — the starchier the skin, the crispier it gets
15 ml (1 tbsp) vegetable oil, divided
4 g (¾ tsp) fine sea salt, divided
30 g (2 tbsp) butter, for the brown butter
30 ml (2 tbsp) crème fraîche
10 g chives, cut on the diagonal
1 pinch of flaky salt, to finish

Method

Wash the potatoes and dry them well. Pierce each one all the way through in four or five places — the steam has to have somewhere to go, or the skins will split at random and dump the interior out onto the tray.
Brush 8 ml (just over ½ tbsp) of the oil over the whole surface and rub 3 g of the salt into it with your fingertips, working it into the creases. Doing this before the bake is the step that makes the skin crisp — the oil transfers heat to the surface and the salt draws moisture out as the potato bakes.
Heat the oven to 200 °C and put the potatoes on the tray in the middle of the oven. Bake for 50–60 minutes, flipping them once halfway through so the oil doesn't pool on one side.
They're done when the center reads 96–98 °C, or when a knife or fork slides in to the core with almost no resistance and then drags out leaving a soft trail of interior. Don't go past 98 °C: above that the starch sets into a glue and the interior goes rubbery no matter what you add on top.
Rest them on the tray for 5 minutes while you make the brown butter: melt the butter over medium heat without stirring, then once it's foaming and the solids start to sink, take it off the fire — it's done at the smell of toasted hazelnut, and it goes from "brown" to "burnt" in the time it takes to read this sentence.
Split each potato open with the sharp knife, press the ends together to fluff the interior, and spoon over a good spoonful of the brown butter and the crème fraîche.
Finish with the chives, the remaining salt, and a shake of the flaky salt on top. Eat straight from the tray or plate; the texture is best in the first five minutes.

Common failures

Skin is soft and papery, not crisp. The potato went in dry — the oil-and-salt step is what carries the heat to the surface. If you skip it, you make a boiled potato with extra steps.
Interior is dense and gluey. It went past 98 °C. Starch retrogrades above that; once the interior sets you can't un-set it, only cover for it.
Skin splits and dumps the interior on the tray. Not pierced enough. Four or five deep punctures, all the way through, before it goes in.
Brown butter burns before it smells nutty. The butter is already at the edge of the browning window when it starts foaming; the move from "golden" to "bitter" is a few seconds, so the lid stays on the fire the moment the solids sink.

Variations & substitutions

With cheese — replace the brown butter with 60 g of grated aged cheddar or gruyère over the open potato, and a quick 3 minutes under the broiler to set it. The brown-butter version is the one that shows the technique; the cheese one is the one that gets eaten.
With bacon — 80 g of bacon, pan-fried crisp in the frying style, crumbled over the top at the last.
Baking powder, small dose — add 1 g (a pinch) of baking powder to the salt-and-oil rub and the skin goes noticeably puffier, at the cost of a faint soapy edge if you're heavy-handed.
No crème fraîche — 30 ml of thick yogurt or sour cream works, just stir it through the brown butter off the heat so the acid doesn't split it.

What to serve with it

A big green salad with a sharp dressing — the potato is already rich, so the salad's only job is acid. A thin tomato slice on top of the potato, with its juice running into the butter, is a legitimate upgrade. If it's dinner and not lunch, the brown-butter pan liquid is worth spooning over rice or a simple steamed vegetable the same way the lemon goes over a pan of seared chicken.

Back to Restaurant · Techniques (pan heat, sauces 101, frying, steaming)