Ramen Kamotonegi Ueno Okachimachi Honten is a ramen shop in the Ueno market alleys that serves duck broth ramen topped with duck chashu. The duck broth is rich and light, and diners choose two toppings from grilled scallion, chopped scallion, onion, and ginger. Payment is made in cash first at the ticket machine in front of the shop, then customers line up, and the shop is open 24 hours. The duck fat can make the ramen feel heavy as you eat, and the duck broth itself does not suit every palate.