Rinse meat cold and dab dry. Cut into thin, wider strips. Clean and wash or peel the vegetables. Cut carrots into flowers, leek into thin rings, peppers into pieces and Chinese cabbage into strips.
Cut the mushrooms into small pieces if necessary. Rinse sprouts cold and dab dry. Heat some oil in a wok and fry the meat in portions for 3-5 minutes, turning it over. Season with salt and pepper.
Remove the cooked meat. Cook the vegetables one after the other in the wok brushed with a little oil while turning. Also season with salt and pepper. Push the cooked vegetables to the edge of the wok. Finally add meat again.
Heat again and add sherry, soy sauce and orange juice. Let it thicken a little. Season with salt and pepper if necessary.