Maguro Soma Suisan Ginza is a tuna izakaya in Ginza, Tokyo. It serves tuna ribs and sashimi by cut, and its tuna rice bowl piles medium fatty tuna, lean tuna, minced tuna and salmon roe into a mound. At lunch, diners choose two side dishes to go with charcoal-grilled fish. The ochazuke broth comes only when requested separately.