Rösti

Name: Authentic Swiss Rösti Recipe
Prep time: 25 min
Cook time: 35 min
Yield: 4
Cuisine: Switzerland
Ingredients: 1 kg starchy potatoes (e.g., Russet or King Edward), about 2.2 lbs; 50 g unsalted butter (approx. 3.5 tablespoons); 1 teaspoon salt; 1/2 teaspoon freshly ground black pepper (optional); 1 small onion, finely chopped (optional, for traditional Zürcher Rösti)