INGREDIENTS
3 lb
russet, Yukon gold or red potatoes, peeled if desired and cut into 2-inch pieces
1/4 cup
butter
1 cup
milk, whipping cream, half-and-half or light cream
1/4 cup
sour cream (or to taste)
1 tbsp
prepared horseradish
1 tsp
lemon juice
1 tsp
salt
1/2 tsp
ground black pepper
Melted butter (optional)