Sift the flour for the dough and place in a mixing bowl along with the cornstarch and baking powder. Add 1 tablespoon of vegetable oil and approx. 175 ml of water to make a thick, smooth dough.
Heat the vegetable oil in a wok. Dip the pieces of meat cut into cubes in the dough and cook in portions. Lift out and drain on paper towels, keep warm.
Drain the oil except for 1 tablespoon from the wok. Add the onion, paprika, pineapple pieces, carrots and bamboo shoots and pan-fry for 1-2 minutes. Remove and set aside.
Mix all ingredients for the sauce together and pour into the wok. Bring to a boil and stir until the sauce is slightly thickened. Cook for 1 minute and then return the meat and vegetables to the wok. Fry for another 1-2 minutes and serve with rice or pasta.