(by Sian Reeves)
(adapted from BBC Food)
3 1/3 c. flour plus extra for dusting
2 t. baking soda
2 t. cream of tartar
2 t. sugar
4 T. unsalted butter, cut into small pieces
2 T. vegetable shortening
1 1/4 c. buttermilk
1 egg, beaten
Preheat oven to 425 F.
In a bowl, combine flour, baking soda, cream of tartar, and sugar.
Add the butter and shortening, and rub into the flour mixture with fingers.
Add buttermilk, and mix to form a dough.
Lightly flour a work surface, and pat the dough out 1 1/2 in. thick.
Use a 2-in. biscuit cutter to form rounds.
Place on a parchment-lined baking sheet.
Brush tops with beaten egg.
Bake for 12 minutes, or until golden.
Cool on a wire rack and serve with clotted or whipped cream and jam.