Garlic Mashed Potatoes

INGREDIENTS

• Salt and freshly ground black pepper
• 1 teaspoon salt
• 4 tablespoons butter, at room temperature
• 1/4 cup sour cream, at room temperature
• 1 teaspoon finely minced garlic
• 1 tablespoon (or more) whole milk, at room temperature or warmed
• 3 medium baking potatoes peeled and coarsely chopped