1Heat wok or 12-inch skillet over high heat until 1 or 2 drops of water bubble and skitter when sprinkled in wok. Add oil; rotate wok to coat side. Add cauliflowerets; stir-fry about 3 minutes or until crisp-tender. Add onions and bell pepper; stir-fry 1 minute. Remove vegetable mixture from wok.
2Add turkey to wok; stir-fry about 4 minutes or until no longer pink in center. Remove turkey from wok.
3Toss lettuce, pineapple chunks, vegetable mixture and turkey in large salad bowl. Shake reserved pineapple juice, the vinegar and pepper in tightly covered container. Pour over turkey mixture; toss to coat.