Unashige (Unaju Restaurant)
A long-established eel specialty restaurant founded in 1980 in Kawayanagicho, Koshigaya. The kabayaki broiled with in-house tare sauce replenished since opening is thick, fluffy, and tender—many reviewers say it's 'too cheap for this quality.' The traditional craftsman's approach requiring advance reservation keeps local regulars coming back for decades. Yahoo! Maps 3.94, Tabelog 3.61/189 reviews. 10 parking spaces.
"The fluffy, tender eel is the best." "The kabayaki set was huge—and way too cheap for that quality!" "Thick eel with perfectly rich fat." "Moved by the traditional craftsman's dedication." "Worth the effort of calling ahead to reserve—you won't regret it."