Stir-Fry Sauce ½ cup low-sodium soy sauce 2 tablespoons beef broth, or cold water 1 tablespoon chili paste, like Sambal Oelek 1 tablespoon rice wine vinegar 1 tablespoon brown sugar 2 teaspoons sesame oil 1 tablespoon cornstarch Moose Stir-Fry 1.5 tablespoons vegetable oil, plus a little more to grease the wok 1 yellow onion, peeled and thinly sliced 5 cloves garlic, thinly sliced 1 small bell pepper, cut into thin strips (whatever colour you prefer) 1 large rib celery, thinly sliced 1 cup sliced baby bella mushrooms, or…