Ingredients for Classic Potato Gratin

• 5 garlic cloves, divided

• 1 tablespoon unsalted butter, room temperature

• 2 medium shallots, quartered through root ends

• 600ml double cream

• 1 cucchiaio di sale kosher

• 1 cucchiaino di pepe nero macinato fresco

• 1 tablespoon thyme leaves, plus more

• 1.8kg russet potatoes, scrubbed, very thinly sliced on a mandoline

• 90g Gruyere, finely grated

• 30g Parmesan, finely grated

Preheat oven to 163°C. Cut 1 garlic clove in half and rub the inside of a 3-qt. shallow baking dish with cut sides. Smear butter all over inside of dish. Bring shallots, cream, salt, pepper, 1 tablespoon thyme, and remaining 4 garlic cloves to a simmer in a small saucepan over low heat; cook until shallots and garlic are very soft, 15–20 minutes. Let cool slightly. Transfer to a blender; blend until smooth.

Arrange potato slices in prepared dish, fanning out a handful at a time and placing in dish at an angle (this ensures every scoop will have tender potatoes from the bottom and crisp edges from the top). Shingle as you work until bottom of dish is covered. Tuck smaller slices into any gaps to fill. Pour cream mixture over potatoes and cover dish tightly with foil. Bake potatoes until tender and creamy, 60–75 minutes. Let cool.

Place rack in highest position; heat grill. Remove foil and top potatoes with Gruyere and Parmesan. Grill until cheese is bubbling and top of gratin is golden brown, 5–10 minutes. Serve topped with more thyme leaves.

Gratin can be baked 1 day ahead. Cover and chill. Bring to room temperature before grilling.

Avvertenza

Sebbene sia stato fatto ogni sforzo per garantire che le informazioni siano accurate e aggiornate, le esigenze individuali possono variare e i requisiti dietetici possono differire in base alle condizioni di salute personali. Controlla sempre le etichette degli alimenti e le informazioni sugli allergeni prima di preparare o consumare qualsiasi ricetta. Se hai preoccupazioni specifiche per la salute, allergie, intolleranze o stai seguendo una dieta prescritta dal medico, consulta il tuo medico di base, farmacista o un dietista registrato prima di apportare cambiamenti significativi alla tua dieta o stile di vita.