Spread 150 g of flour, 75 g of flakes of butter on top, add 1/2 teaspoon of salt. Process everything into crumbs.
Add enough cold water (approx. 3 tablespoons) until the dough is smooth. Wrap in foil,
Chill in the refrigerator for about 30 minutes.
Topping: Season 100 g creme fraiche with salt, freshly ground pepper and grated nutmeg.
Preheat the oven to 200 degrees (convection 180 °).
Roll out the dough with a little flour into a flat cake and place on a baking sheet lined with baking paper (or better in a tart form). Prick the dough several times with a fork.
Place greaseproof paper on top and spread the legumes on top.
Pre-bake for 10 minutes. Remove the pulses and baking paper.
Peel 200 g potatoes and cut into thin slices.
Spread the creme fraiche on the dough and place the potatoes on top.
Salt, pepper and drizzle with 1 tablespoon of olive oil.
Bake for 25 minutes.
Cut 3-4 cloves of garlic into thin slices, sprinkle with 1 tablespoon of rosemary needles on the potatoes and bake for about 10 minutes.