Buttermilk Biscuits – Simmer + Sauce

Ingredients

• 3 1/2 cups all-purpose flour (I use White Lily )
• 1/1-1 teaspoon sugar
• 1 tablespoon kosher salt
• 1 tablespoon baking powder
• 1 teaspoon baking soda
• 1 1/4 cups cold unsalted butter, grated
• 1 cup cold whole fat buttermilk
• 1 large egg, lightly beaten, for egg wash