Mix flour, sugar, baking powder and salt together in a bowl. Using a pastry blender or two knives, cut in shortening until the mixture looks like fine crumbs.
Add milk while stirring with a fork to make a soft dough. Roll into a ball.
Knead the dough several times until smooth on a lightly floured surface. Roll out into 9-inch (23cm) circle. Place in a greased 9 inch (1.5L) round cake pan.
Bake in 425F (220C) oven for 15 to 20 minutes or until knife inserted in center comes out clean.
Cur into wedges and serve warm.