Brush 23 cm cake pan with butter. Combine 2 tablespoons non-fat milk and saffron threads in small saucepan. Heat and stir just to simmering. Remove from heat. Sift together cake flour, 1 cup sugar, baking powder and baking soda. Stir together saffron mixture, remaining non-fat milk, egg substitute, rose water and 1 teaspoon vanilla. Quickly stir into dry ingredients just until blended. Pour into prepared pan. Bake at 375'F. about 15 minutes or until wood pick inserted in center comes out clean. Let cool 5 minutes. Combine remaining 0.75 cup sugar and water in small saucepan. Heat to simmering. Simmer 5 minutes. Stir in remaining half teaspoon vanilla. With skewer, poke holes evenly over entire surface of cake. Spoon syrup evenly over top of cake. Sprinkle with pistachios. Cut into diamond-shaped pieces, baklava-style. NOTE: If desired, use 1 large egg in place of quarter cup egg substitute.