In a mixing bowl, combine the first five ingredients.
Heat a wok on high heat. Add oil. Slosh around. Stir fry pork with garlic and ginger until meat is whitish.
Add the gravy ingredients and stir until sauce is thickened. Add onion, celery and mushrooms, tossing for a while. Finely, add snow peas and mix for about 2 minutes. Serve with soy sauce.