Cook the frozen beans in boiling salted water for 7-8 minutes. Quench and drain.
Peel and chop the garlic. Mix with 1⁄2 TL chili flakes, chili and soy sauce. Wash the chops, dab dry and spread a thin layer of the marinade on them. Fry in hot oil on each side for about 2 minutes. Brush with the rest of the marinade and continue frying for about 1 minute.
Fry the beans and lemon zest in hot butter for about 3 minutes. Season with salt and pepper. Serve, drizzle with broth.