whole wheat buttermilk biscuits with strawberries

Ingredients

• 2 C white whole wheat flour
• 1 C all purpose flour
• 1 T flax seed meal
• • 1/4 C sugar
• • 4 tsp baking powder
• 1 tsp sea salt
• • 1 tsp cream of tartar
• • 2 T powder sugar
• 1/2 C butter, unsalted
• 1 1/4 C buttermilk, or sour milk*
• 1/4 C whipping cream, plus some for brushing tops
• 1 C fresh strawberries, chopped
• course sugar for sprinkling, optional