Strawberry Shortcake with biscuit

2 cups flour 2 tablespoons sugar 1 tablespoon baking powder 1/2 teaspoon baking soda 1/2 teaspoon salt 3 tablespoons cold butter 1 egg 1 cup sour cream 2[...]

1 1/2 cups all-purpose flour , plus more all-purpose flour , for dusting 3/4 cup cake flour 3 tablespoons sugar 2 teaspoons baking powder 1/2 teaspoon salt 6[...]

2 cups all-purpose flour 1 tablespoon sugar 2 teaspoons baking powder 1/2 teaspoon salt 10 tablespoons unsalted butter , chilled and cut into pieces 2/3 cup[...]