Adjust oven rack to upper-middle position and heat oven to 450 degrees F. Lightly spray a baking sheet with nonstick cooking spray.
In a medium bowl whisk together the flour, sugar, baking powder, and salt. Stir in the heavy cream until a dough forms, about 30 seconds.
Empty the dough onto a floured surface and knead into a smooth ball, this will take about 30 seconds. On a floured surface pat the dough into a 1-inch thick circle. Using a 2 3/4 inch (or 3 inch) biscuit cutter, cut biscuits and place on the prepared baking sheet. Pat out dough scraps into a 1-inch thick circle and cut again.
Brush the biscuit dough with the egg white and sprinkle with white sparkling sugar or granulated sugar.
Bake 15 minutes, or until the biscuits are golden brown. Transfer biscuits to a wire rack to cool. Cut biscuits in half and serve with whipped cream and berries. Biscuits can be served warm or at room temperature.