Melt the duck fat or butter in a 25-cm (10-inch) ovenproof non-stick skillet over medium heat. Spread the potato mixture in the skillet, pressing down lightly to form a large pancake. Cook for 7 minutes. Do not stir. Invert the rösti onto a large plate and slide it back into the skillet. Transfer to the oven and bake until the potatoes are tender, about 15 minutes.
Salad
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