Hamburger Buns

INGREDIENTS

• 4¼ cups bread flour
• 1½ teaspoons salt
• 3 tablespoons granulated sugar
• 2 teaspoons instant yeast
• 1 egg, slightly beaten, at room temperature
• ¼ cup butter, at room temperature
• 1½ cups buttermilk or whole milk, at room temperature
• 1 egg, whisked with 1 teaspoon water until frothy, for egg wash (optional)
• Sesame or poppy seeds for garnish (optional)