Preheat oven to 375 degrees; grease a baking sheet. Combine the flour, orange peel, baking powder, baking soda and salt in a large bowl. Cut in the butter with a pastry blender or 2 knives until the mixture resembles coarse crumbs. Add the currants. Combine the sour cream, honey and egg in a medium bowl until well blended. Stir into the flour mixture until a soft dough forms. Turn out the dough onto a lightly floured surface. Knead the dough 10 times. Shape the dough into an 8-inch square; cut into 4 squares and cut each in half diagonally, making 8 triangles. Place the triangles 1 inch apart on the baking sheet. Bake for 15 to 20 minutes, or until golden brown and a toothpick inserted in the center comes out clean. Remove from the baking sheet. Cool on a wire rack for 10 minutes. Serve warm or cool completely.