Blueberry Shortcake

Ingredients

• 2 cups unbleached white flour, plus more for kneading
• ¼ cup granulated cane sugar
• 1 Tbsp baking powder
• 1 tsp salt
• ¾ tsp cream of tartar
• ¾ cup cold butter, cut into cubes
• ¾ cup whole milk
• ¼ cup buttermilk
• 2 pints fresh blueberries
• 2 Tbsp granulated cane sugar
• 1 Tbsp lemon juice