1. Shell, devein and butterfly shrimp. Marinate as in the second or third variation of Basic Deep-fried Shrimp, then deep-fry. (Reserve the marinade.)
2. Slice bamboo shoots thin; also Chinese cabbage stems, celery, water chestnuts, onion and mushrooms.
3. Cut snow peas in 2 or 3 pieces. Split scallions in half lengthwise; then cut crosswise in 1-inch sections. Crush garlic.
4. Blend cornstarch, soy sauce, sugar and pepper to a paste.
5. Heat remaining oil along with sesame oil. Add salt and garlic; stir-fry to brown lightly. Add all vegetables except scallions and stir-fry 2 to 3 minutes to heat through.
6. Add reserved shrimp marinade and stir-fry 2 minutes more.
7. Add scallions; stir-fry a few times. Then add stock and heat quickly. Cook, covered, over medium heat, until vegetables are nearly done
8. Stir in deep-fried shrimp to reheat. Then stir in cornstarch paste to thicken and serve at once.