Preheat oven to 325 F and rub a baking sheet lightly with butter. In a large bowl, sift together the flours, sugar, baking powder, and salt. Pour back into the bowl any bits of grain or other ingredients that may remain in the sifter.
Add the heavy cream and stir using your hands or a fork until the dough just comes together. Don’t over mix: the dough is supposed to be shaggy. On the baking sheet, pile the dough into six mounds, leaving 3-4 inches between them. Sprinkle with remaining 1 tsp. sugar for dusting. Bake for 35-40 minutes or until the tops just begin to brown.
While the biscuits are baking, place the berries in a bowl and toss with 1 Tbsp. sugar. Allow them to sit and release their juices, uncovered, for 30 minutes (or until the biscuits are done). Meanwhile, whip the remaining cup of cream into soft peaks. Add 1 tsp. of sugar if you like your whipped cream sweetened.
When the biscuits are out of the oven, fill each bowl with a generous spoonful of berries, cream, and arrange a warm biscuit alongside.