1/3 cup lowfat buttermilk
2 tablespoons agave syrup
1/3 cup heavy (whipping) cream (divided)
1 3/4 cups unbleached all-purpose flour
1/3 cup Sugar
1/2 teaspoon baking powder
1/2 teaspoon salt
1/4 teaspoon baking soda
1/2 cup (1 stick) cold unsalted butter (cut into 1/2-inch cubes)
1/2 cup diced Earthbound Farm Organic Dried Mangos (about 2 ounces)
1/2 cup diced dried pineapple (about 1-1/2 ounces)
1 large egg yolk
  turbinado sugar (as garnish)