Keep the screen awake with cook mode on the Good Food app.
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Method
step 1
Preheat oven to 190C/fan 170C/gas 5.
step 2
Peel the potatoes, slice thinly, rinse under cold water.
step 3
Choose a pan large enough for all of the ingredients, then add the creme fraiche, bay leaf, pinch of salt, ground pepper and nutmeg. Bring to the boil, then reduce to a simmer. Add the drained potatoes and simmer for 5 minutes.
step 4
Rub the base and sides of a large gratin dish with the garlic before adding the potato mixture, then smoothing the surface.
step 5
Finally add the Gruyere and bake for about 1 hour. Check that the potatoes are cooked through then serve hot.