Biscuits and Gravy

Biscuits

• 1 oz salted butter cut into pieces and frozen, plus extra to grease
• 9 oz all-purpose flour plus extra to dust
• ¾ tsp fine sea salt
• ¼ tsp baking soda
• 4 tsp baking powder
• 1 oz vegetable shortening cut into pieces and frozen
  or 1 oz lard cut into pieces and frozen
• 7 ½ oz buttermilk chilled
• 1 tsp bacon drippings optional

Gravy

• 16 oz uncooked breakfast sausage crumbled into pieces
  or 16 oz breakfast sausages casings removed and crumbled into pieces
• 2 oz salted butter
• 2 oz all-purpose flour
• ½ tsp salt
• ½ tsp white pepper
• 18 oz whole milk