Combine dry ingredients in medium bowl.
Cut in butter until chunks are pea sized.
In a separate bowl combine sour cream or yogurt, egg, lemon juice and vanilla.
Combine wet and dry ingredients. Gently knead in dark chocolate and raspberries.Do not over knead or scones will be tough.
Divide dough in two. On greased cookie sheet or cast iron pan, pat into two circles about eight inches in diameter.
Use knife to cut into eight equal pieces.
Bake for 10-12 minutes. Bottom of scones should be golden brown.
Serve with traditional clotted cream or whipped cream and jam.