Soda Scones

Name: Soda Scones
Yield: Makes 4 Large, 6–8 Small
Cuisine: Scottish
Ingredients: Scant ½ pt (300 ml) buttermilk (1¼ c) (or fresh milk soured with lemon juice till it curdles); Scant ½ pt (300 ml) buttermilk (1¼ c) (or fresh milk soured with lemon juice till it curdles); ½ teaspoon salt; Scant ½ pt (300 ml) buttermilk (1¼ c) (or fresh milk soured with lemon juice till it curdles); 1 teaspoon cream of tartar; 1 teaspoon bicarbonate of soda; 8 oz (250 g) plain white flour (2 c)