1. Heat a wok or large frying pan over medium-high heat. Add 1 tbsp. oil, swirling to coat pan. Add beans; stir-fry until blistered and mostly tender, about 6 minutes. Transfer beans to a bowl.
2. Heat remaining 1 tbsp. oil in wok. Add pork and cook, stirring frequently to break up big pieces, about 2 minutes. Stir in sherry, soy sauce, and chili garlic sauce and cook until pork is no longer pink, about 3 minutes. Return beans to wok and stir-fry until hot.