Preheat oven to 375°F. Sift flour. Measure and sift together into a bowl: flour, sugar, baking powder, baking soda and salt. Cut butter into flour mixture until butter is distributed and mixture has the consistency of coarse meal.
Add, stirring quickly, the buttermilk, egg and raisins. Stir just until the flour mixture is all moistened.
Turn dough onto a well-floured board and knead lightly 7-8 times. Shape into an 8-inch circle or divide dough in half and shape into two smaller circles. Place on well-greased baking sheet.
Dip a knife in flour and make a lengthwise and crosswise cut through the top half-inch surface of the dough. Bake for 30 minutes or until golden brown.
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