Raikyu Honten
Established 1961, this legendary ramen shop is the representative restaurant of Iwamizawa. The signature miso ramen loaded with vegetables and 250g of noodles draws lines from opening at 9:30am. Said to be 'the only place in Iwamizawa where you will find a queue.'
Reviews from 40-year regulars, notes of unbelievable vegetable portions, and Iwamizawa soul food. Yahoo Maps 3.93 (50 reviews), TripAdvisor 4.6 (14 reviews), Tabelog 3.46 (163 reviews). Midorigaoka branch is independently operated noren-wake; only 2 locations total.