For the crust: * 1 cup soft butter * 1/2 cup powdered (confectioners) Sugar (if unavailable locally, make by grinding Sugar in the coffee grinder) * 2 cups of white flour * dash of salt For the filling: * 1/4 cup of white flour * 2 cups of Sugar * 4 large eggs (5 Omani store size eggs), beaten * 6 Tablespoons of lemon or lime juice * 1/2 teaspoon of baking powder