Located just behind Sensoji in Asakusa, Yadoroku is the oldest onigiri specialist in Tokyo. Choose from a range of classic fillings including salmon, ume (pickled plum), tarako (salted pollock roe), shirasu (whitebait) and okaka (dried bonito flakes), all for an affordable ¥319-¥770. If you're adventurous, try out some of the more unique ingredients such as hatogarashi (red pepper leaf boiled in soy sauce) and narazuke (Japanese cucumber pickled with sake lees).
Lunch sets are available from ¥814 and include two rice balls, miso soup with tofu, and takuan (pickled radish). For ¥1,100, you can have three rice balls with your lunch set.