Easy Bacon Cheddar Chive Biscuits

Ingredients

• 20 ounces all-purpose flour
• 2 tablespoons granulated sugar
• 1 tablespoon baking powder
• 2 teaspoons baking soda
• 2 teaspoons salt
• 6 ounces unsalted butter (cold, grated or cut into small pieces)
• 12 ounces buttermilk (cold)
• 8 pieces bacon (about 1/4 cup baked and chopped)
• 6 Tablespoons fresh chives (about 1/4 cup finely chopped)
• 2 ounces melted butter (for the tops of the biscuits)
• 1 Tablespoon flaky salt (for topping (optional))
• 4 ounces cheese (shredded)
• 1 whole egg
• 1 Tablespoon water