Homemade collagen broth simmered for more than 16 hours and then combined with yamaimo (mountain yam), sea cucumber, chicken balls, sharksfin melon, shiitake mushrooms, carrots, zucchini, yamaimo, beancurd, black fungus, barley, soy sauce, onions, garlic and ginger. Topped with toasted white sesame seeds, chopped spring onion and ginger scallion in oil. Presumably, the collagen helps to fight aging and to smooth out your skin (crater face)! It’s all the rage here now that Japan’s been infected by the “bijin nabe” (beauty hotpot) craze.