1. Cook beans in boiling water 2 minutes or until crisp-tender. Drain and rinse under cold running water; drain. Pat beans completely dry with paper towels.
2. Heat a 14-inch wok over high heat. Add 1 1/2 teaspoons oil to wok, swirling to coat. Add green beans to wok; stir-fry 3 minutes or until browned. Spoon green beans into a bowl.
3. Add remaining 1 1/2 teaspoons oil to wok, swirling to coat. Add shallots, garlic, ginger, and crushed red pepper; stir-fry 15 seconds or just until garlic begins to brown. Return green beans to wok. Add vinegar, soy sauce, and salt to wok; toss to combine.