Menya Retsu
A niboshi (dried sardine) ramen specialist in the residential eastern part of Koshigaya. Google Maps 4.2/406 reviews. Ranked 4th in Netlab Research's 「Top 10 Koshigaya Ramen Shops by Google Review Score」 (April 2025). The medium-thin noodles in a 100% niboshi broth serve as the benchmark for niboshi ramen fans in Koshigaya. Three or fewer directly-operated locations; no franchise expansion.
「A restaurant this focused on niboshi is rare even in Koshigaya.」 「The broth is so good you end up drinking it all.」 「Worth traveling far out of your way for.」 「That 4.2 rating is well earned.」