There are recipes we pull out every autumn like a reflex, as soon as the temperatures drop and the craving for a hearty dish sets in. The gratin dauphinois is one of them — no revolution here, just the promise of a well-executed classic. This version is inspired by Cyril Lignac’s cooking, with two or three precise steps that really make the difference.
Ingredients :
- Melting potatoes (1.2 kg) — The choice of potatoes determines the entire final texture. A firm, dry variety will remain compact even after 1.5 hours in the oven, never reaching the desired meltiness. Opt for Charlotte or Monalisa: they become creamy at heart while keeping their slices intact. Floury varieties, on the other hand, collapse during cooking and make the gratin pasty.
- Heavy cream (50 cl) — The cream provides the fat and natural binder of the gratin. Only heavy cream — a light version will curdle during cooking and make the base watery rather than silky. It is infused with garlic and nutmeg before being poured over the potatoes, then thickens gradually as it absorbs the starch during the long oven cooking.
- Whole milk (30 cl) — The milk is not just to stretch the cream cheaply: it lightens its richness and gives a final result that is less heavy on the palate. It is precisely this milk-cream balance that distinguishes a melting gratin from a sickening one. Semi-skimmed can work in a pinch, but the result will be slightly less creamy.
- Garlic (2 cloves) — Garlic is not used to strongly flavor the dish — it gently infuses into the heated cream and almost completely disappears once cooked. Crush the cloves without chopping them, with the flat of the blade, to obtain a subtle, even aroma. Also rub the bottom and sides of the gratin dish with half a clove before buttering it: this leaves a light aromatic trace over the entire surface.
