Classic French Potato Gratin (Gratin Dauphinois)

A floury potato like Maris Piper, King Edward, or Russet is ideal. Their high starch content thickens the cream into a luscious sauce and gives that perfect tender-but-not-waxy bite. Avoid waxy potatoes like Charlotte or New Potatoes; they hold their shape too well and result in a gluey, separate sauce.

Yes, brilliantly. Assemble the gratin completely in the dish, cover, and refrigerate for up to 24 hours. Let it sit at room temperature for 30 minutes before baking. You may need to add 10-15 minutes to the baking time. The flavour is often better.

Use a generous amount of cream, layer the potatoes evenly, and bake slowly at a moderate temperature. Covering the dish for the first part of baking helps prevent drying out.

Please, don’t. A classic Gratin Dauphinois contains no cheese. Adding cheese, especially Gruyère, makes it a delicious but different dish: a Gratin Savoyard. They are cousins, not twins. This recipe is about the purity of potatoes, cream, and garlic.

Brush or dot the top with butter before baking. Bake uncovered for the last 20–30 minutes at a slightly higher temperature to achieve a golden crust.

Yes! Substitute cream and butter with plant-based alternatives like coconut cream, oat cream, or vegan butter. The texture will be slightly different but still rich and delicious.

Leftovers keep for 3-4 days in the fridge. Reheat individual portions in a covered ovenproof dish at 160°C until warmed through (about 15-20 mins). The microwave will make it soggy. It will never be quite as perfect as the first time, but it’s still a treat.

es! Garlic, thyme, nutmeg, or bay leaves complement the potatoes and cream beautifully. Add garlic slices between potato layers or sprinkle herbs on top before baking.

Gratin Dauphinois is a traditional French potato dish made with thinly sliced potatoes, cream, and sometimes cheese, baked until golden and creamy. Unlike some gratins, authentic recipes don’t always include cheese—just cream, butter, garlic, and potatoes.

Crème fraîche is the authentic choice for its subtle tang and stable fat content, which prevents curdling. You can use all double cream for a richer, slightly heavier result, but do not substitute with sour cream or yogurt, they will split. For a lighter version, half milk, half single cream works.

Non. A thousand times, no. A true Gratin Dauphinois uses raw potatoes. They cook slowly in the cream, absorbing its flavour and achieving the perfect texture: tender, not mushy. Par-boiling is a different, less luxurious dish.

Three likely culprits:
1) Your potato slices were too thick and didn’t cook through properly, releasing starch and water.
2) You didn’t let the cream/milk mixture infuse and cool slightly before assembling (hot liquid can “seize” the starch).
3) You didn’t let it rest before serving. That 10-minute pause is not a suggestion; it’s when the sauce sets.

For the classic, silky texture, yes, you should peel them. The skins can create a grainy mouthfeel and prevent the slices from layering evenly. Save the peels, toss them in oil and salt, and roast for a cook’s snack.

Patience. A proper gratin gets its colour from long, steady cooking. If after 45 minutes it’s still pale, then you can finish it under a hot grill for 2-3 minutes. But if you rush it, the potatoes underneath won’t be tender. The golden top is a reward for patience.

You have two options:
1) Remove the garlic slices after infusing the cream, as suggested in the recipe.
2) For a subtler perfume, rub the inside of the baking dish with a cut clove of garlic instead of slicing it into the cream.