Make sauce by combining chicken stock, hoisin sauce, crushed red pepper, rice vinegar, cornstarch and remaining 1 tablespoon soy sauce in a bowl. Set aside.
Heat a wok or sauté pan over high heat until hot. Add peanut oil and when the oil is smoking, add green beans and cook, stirring frequently, until they are slightly wrinkled, 3 to 5 minutes. Using a slotted spoon, transfer the beans to a paper towel-lined plate, and set aside.
Add garlic to wok and cook briefly until fragrant, about 10 seconds. Add ground pork and stir-fry until no longer pink, about 11/2 minutes. Stir sauce mixture, add it to wok, and stir to combine. Bring liquid to a boil and cook until it begins to thicken, about 45 seconds.
Return green beans to wok and drizzle with sesame oil. Cook briefly until warmed through. Serve immediately, over hot rice, if desired.
Nutrition information per serving:
Calories436Fat32 gSodium960 mg