Using a food processor finely chop the carrots and ginger. Transfer the mixture to a bowl.
Finely chop the mushrooms in the food processor and place them in the bowl with the carrots. Finally, process the cabbage and chives until finely chopped. Add them to the bowl with the other veggies. (Be careful not to pulse the veggies for too long. Otherwise, you may puree them!)
Heat the oil in a wok and sauté the veggie mixture until it is heated through, 3-4 min.
Remove the mixture from the heat and transfer it back to the bowl that you had the chopped veggies in previously. Let the mixture cool slightly and then add in the beaten egg, soy sauce, and ground pepper.
Mix well and taste the mixture. Add salt or additional soy sauce as desired.
Use this filling to fill dumplings or wontons, as desired.