Add your mash potato, beef patties with onion and the spices and 1/2 cup water, mix well. Then place into a pan, and on medium heat, cook until beef is well-done.Turn off the stove, set aside to cool
Skin
In a bowl that consist flour mixed with salt and baking powder, add the melted margarine, then add in the ice water. Using wood spoon/spatula, mix mixture into a sticky mass.
Place the sticky mass of the dough on a floured surface, then knead the dough for less than 3 minutes, do not knead it longer for you will only make a hard pastry in the end.
Beef Pastry
Divide the dough into 8-9 small balls. Roll each balls into a flat skin. Place about 3 tsp of fillings in the middle of the pastry skin. (If you prefer a hot beef pastry, sprinkle a little bit ground paprika on top of the filling before sealing the pastry)
Wet all sides of the pastry with oil, and sealed the pastry.
Place on a baking pan. Bake in 400 F for about 45 minutes or until pastry skin is cooked (golden brown)
5 minutes before turning off the oven, take out the pan and brush each pastry with margarine. Put them bake into the oven.
Serve with sauce
Serving
For the sauce, prepare according to the instruction on the package