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This Classic French Potato Gratin Dauphinois layers thinly sliced potatoes with garlic-infused cream and a whisper of nutmeg, baked low and slow until the top is deeply golden and the inside is meltingly soft. True to its Dauphine roots, there's no cheese needed - just potatoes, cream, and patience for the richest, most comforting side dish on the table.
Per serving
340kcal
Calories
6g
Protein
28g
Carbs
23
Prep Time
20 min
Cook Time
100 min
Servings
6 people
Difficulty
easy

Fat
2g
Fiber
3g
Sugar
Follow step-by-step with voice guidance.
Preheat the oven to 150°C (300°F). Rub a baking dish with a cut clove of garlic, then grease it well with the butter.
Peel the potatoes and slice them very thinly (about 3mm), using a mandoline for even slices. Do not rinse the starch off - it helps the gratin set.
In a saucepan, gently heat the heavy cream, whole milk, the remaining minced garlic, nutmeg, salt, and black pepper until just simmering.
Layer the potato slices in the prepared dish, overlapping slightly, and pour a little of the warm cream mixture over each layer as you go.
Once all potatoes are layered, pour over the remaining cream mixture, pressing down gently so the liquid rises to just cover the top layer.
Cover with foil and bake for 60 minutes, then remove the foil and continue baking for another 30-40 minutes until the top is golden brown and a knife slides through the potatoes easily.
Rest for 10-15 minutes before serving to allow the gratin to set into clean slices.
Slice Evenly: Uneven potato slices cook at different rates, so a mandoline is worth using for consistent, tender results throughout. Don't Rinse the Potatoes: The natural starch released from the sliced potatoes is what thickens the cream into that classic silky gratin texture. Let It Rest: Cutting into the gratin immediately after baking makes it fall apart - resting lets the cream fully set around the potatoes.
The authentic version from the Dauphine region uses no cheese at all - the creamy texture comes purely from the potatoes, cream, and milk. Adding gruyere is a popular variation, but it's not traditional.
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