How to make the filling of kohlrabi, vermicelli and egg pie? Chop the kohlrabi and marinate it with salt for a while. Soak the vermicelli in hot water and chop into pieces. Fry the eggs and chop them into pieces. Then put the kohlrabi in a basin, add some water and let it dry. Add vermicelli eggs. Add onion, ginger, and thirteen spices. Salt seasoning oil. Stir evenly.