Irish Bread

3 cups all purpose flour
2 tablespoons baking powder
1/2 teaspoon salt
1/2 cup sugar
1/4 cup shortening
1/4 cup butter or margarine
1 cup raisins
1-1/4 cups milk
2 large eggs
1 tablespoon white vinegar

Combine first 4 ingredients in a bowl. Cut shortening and butter into flour mixture with a pastry blender or fork until mixture is crumbly. Stir in raisins. Whisk together milk, eggs, and vinegar; add to flour mixture, stirring just until moistened. Pour batter into a greased 10-1/2 inch cast-iron skillet. Bake at 350 for 35 to 40 minutes.