Gratin Dauphinois Express
(grah-TAN doh-fin-WAH ek-SPRES)
Chapter 3 — The Sides
A proper bistro gratin is a specific beast—structurally sound, deeply savory, and possessing a texture that borders on savory custard under a blistered crust. Purists will tell you traditional Dauphinois forbids cheese and stock, but we are chasing the modern American brasserie canon, the kind that arrives sizzling in cast iron alongside your steak frites. We start the unrinsed potatoes in cold cream to coax out the starch, simmer them briefly on the stove, and bake until molten. The ultimatum: you cannot rush the rest. You must let this chill in the fridge overnight before reheating. It is the only way to achieve those perfectly sliceable, towering portions.
Ingredients
- Yukon Gold potatoes2 1/2 lb
- heavy cream2 cup
- chicken or veal stock1 cup
- garlic2 large cloves
- nutmeg1/2 tsp
- Kosher salt2 tsp
- ground white pepper1/2 tsp
- AOC Gruyère cheese5 1/2 oz
- cultured French butter2 tbsp
Method
- 01
Toss the unrinsed potatoes in the cold dairy and stock.
Place the sliced potatoes into a large heavy-bottomed Dutch oven, pour in the cold cream and cold stock, and add the smashed garlic clove, nutmeg, salt, and white pepper.
- 02
Simmer gently on the stovetop to release the starches.
Place over medium heat and cook for 12 to 15 minutes, stirring the bottom gently every couple of minutes to prevent the naturally released starches from scorching.
- 03
Prepare the gratin dish.
Preheat the oven to 400°F, rub the inside of a 9x13-inch baking dish or cast-iron skillet aggressively with the cut side of the halved garlic clove, and smear it generously with half of the cultured butter.
- 04
Assemble the gratin in layers.
Using a slotted spoon, transfer half of the pliable potatoes into the dish, sprinkle with a third of the Gruyère, add the remaining potatoes, pour all the thickened cooking liquid over the top, and finish with the remaining Gruyère and dotted butter.
- 05
Bake until aggressively caramelized.
Bake for 20 to 25 minutes until you see a vigorous, bubbling perimeter and a deeply browned, blistered crust.
- 06
Cool and refrigerate overnight.
Do not cut into the molten gratin; let it sit at room temperature for 2 hours, then wrap tightly in plastic wrap and refrigerate overnight to allow the starches to retrograde and set.
- 07
Portion and reheat for service.
The next day, cut the cold gratin into sharp 3-inch squares, transfer to a parchment-lined baking sheet or individual sizzle platters, and bake at 375°F for 15 to 20 minutes until sizzling.
Notes
The overnight rest is non-negotiable.
If you slice this right out of the oven, it will collapse into a delicious but unstructured pool on your plate. Chilling it overnight is the restaurant secret to perfect, geometric squares.
Do not rinse your potatoes.
Washing the slices sends all the precious surface starch down the drain, leaving you with a watery sauce instead of a luxurious, naturally bound custard.