1 cup all-purpose flour
1 cup cake flour
2-3 tablespoons chopped fresh dill
2 teaspoons baking powder
1/2 teaspoon baking soda
1/2 teaspoon salt
6 tablespoons cold butter (or non-hydrogenated butter alternative), cut into bits
1 cup scant buttermilk (or 1 cup soymilk plus 1 teaspoon apple cider vinegar, whisked)
1 tablespoon prepared horseradish
additional buttermilk