Buttermilk Biscuits

INGREDIENTS:
2 cups all-purpose flour, stirred before measuring*
2 1/2 teaspoons baking powder
1/4 teaspoon baking soda
1 teaspoon salt
1/4 cup lard or vegetable shortening, chilled
2 tablespoons butter, chilled
3/4 cup buttermilk
PREPARATION:
Heat oven to 450°. Adjust oven rack to center position.
In a large bowl, combine flour, baking powder, soda, and salt. Cut in chilled shortening and butter until you have pieces the size of small peas. Make a well in center of dry ingredients; pour in buttermilk. With a wooden spoon, gently blend dry ingredients into the buttermilk, just until mixture is clumping together. If necessary, add a few more teaspoons of buttermilk.
Transfer dough to a lightly floured board. Pat out in a circle about 8 inches in diameter and 1/2-inch thick. Using a 2 1/2 to 3-inch biscuit cutter, cut out and place on ungreased baking sheet. Bake on center oven rack for about 10 to 12 minutes, until tops are browned. Makes 10 to 12 biscuits, depending on size of cutter.