Assemble and attach rotor slicer/shredder using thick slicer cone (no 3).
Turn to speed 4 and slice celery, broccoli stems, onions, and mushrooms,
keeping each separate.
Heat half of oil in a 12-inch skillet or wok over medium high heat. Add
celery, onions, and garlic and stir-fry 1 minute. Add sherry and cook 30
seconds. Remove from pan.
Heat remaining oil in pan. Add sliced broccoli stems and stir fry until not
quite tender, about 2 minutes. Add mushrooms and stir-fry 1 minute.
Return celery, onions, and garlic to pan. Stir fry until hot. Season with
ground ginger and soy sauce and serve immediately.