Smoked Trout Hash | Saveur

Ingredients

• 4 Tbsp. unsalted butter, divided
• 1 lb. boiled and cooled russet potatoes, cut into 1/2" cubes (2¼ cups)
• 1 small yellow onion, finely chopped (1½ cups)
• ¹⁄₄ lb. boneless smoked trout, flaked into large chunks
• ¹⁄₄ cup heavy cream
• 1 Tbsp. finely chopped fresh dill, plus more for garnish
• ¹⁄₄ tsp. cayenne pepper
• 1 medium garlic clove, finely chopped (1 tsp.)
• Kosher salt and freshly ground black pepper
• 3 Tbsp. crème fraîche
• 2 tsp. prepared horseradish
• Finely chopped fresh chives, for garnish
• Lemon wedges, to serve