Mix the flour and water together in a small bowl to create the "glue" and set aside.
Heat the sesame oil in a pan. Add garlic (and chilli if using) and sauté until fragrant.
Add carrot, Chinese leaf, bamboo shoots, and mushrooms. Stir-fry on high heat for 2-3 minutes until softened. Add bean sprouts last and cook for another minute.
Stir in the oyster sauce, MSG, soy sauce, and white pepper. Mix well. Remove from heat and let the filling cool completely. This is crucial to prevent soggy pastry.
Place a spoonful of filling on a wrapper, fold according to package directions, sealing the edge with your flour glue
Add vegetable oil to the pan and shallow fry for about 8 minutes