In large bowl, sieve or sift the flours, potato starch, xanthan gum, sugar, baking powder, and salt together. Drop the cubes of butter into the dry ingredients and toss to coat the butter. Cut in the butter with a wire pastry cutter until mixture resembles coarse crumbs or pea-sized pieces. Quickly run fingers through the mixture several times, scooping up bits of the butter and rubbing them into long paper-thin slivers between the thumb and forefinger. It is not necessary to do this with every piece of butter – just quickly pick several at random.
Fold the dough in half over onto itself. Lightly press the dough down. Turn the dough a half turn and repeat the folding exercise. Do this 3-4 times.
To make round-shaped scones: Lightly press dough into circle about ¾“ thick. Use a lightly floured 1¾” – 2” round cutter to cut scones from dough. Push the cutter straight down and out of the dough without twisting the cutter in the process. Re-flour the cutter before cutting out each scone. Gather dough scraps and form into a circle from which to cut remaining scones. Transfer scones to prepared baking sheet, placing scones about 1” apart.
To serve: Serve warm scones along with clotted or English double cream and a favorite jam. Or, simply enjoy with a good slather or butter on the scones.
Yield: 1 dozen wedge-shaped scones or 10 – 2” round scones (exact number will depend on size of cutter used and thickness of dough)
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