In this rendition, pineapple gets a boost from brown sugar, while vinegar and soy sauce team up for the tangy aspect. Green peppers, celery, and water chestnuts join chicken in this easy one-skillet dish.
There's just something about soy sauce and lemon juice that makes flank steak become moist and flavorful. The longer you marinate the meat, the more tender it gets. Grill and slice on the diagonal, and you have a great meal.