Mariel's Never Fail Scones

3 C. Flour
1/3 C. Sugar
2 1/2 tsp. Baking Powder
3/4 tsp. Salt
1/2 C. Cold, Firm Butter
1/4 C. Cold, Firm Margarine
1 tsp. Grated Lemon Peel
1 C. Buttermilk
1 Egg Yolk
1 tsp. Water

Preheat oven to 425. In a large bowl combine the first four ingredients. Cut in butter and margarine with a pastry cutter until it resembles course corn meal. Stir in lemon peel and butter milk. Turn onto floured surface and knead 12 times, do not over knead. Place on a 12 to 14 inch pizza pan and form into an 8 inch circle and cut into 8 to 10 wedges. Separate the wedges about 1 1/2 inch by pulling them out towards the center, keeping them in the circle formation. Brush with a mixture of the egg yolk and water and bake for 15 to 18 min. until golden brown.

Adding fruit:
Use 3 cups of frozen fruit for best results (frozen is important because if makes the scones really moist!). Rhubarb is excellent in this recipe. Glaze with a mixture of powdered sugar and milk.