Hello, for Uomasa's unajyu, which time of the year would you suggest to go for their very best type of eel? Summer or winter? And which type of eel is their best one for unajyu? Thank you!

Wild caught eel is said to be in season from October to December.
Since you're going to Uomasa, I'd recommend tasting and comparing a rather rare, cultivated variety called "Bando taro", which is raised in an environment close to being wild, with a wild caught variety.

Thank you!