[kunroku]

Hi, I happen to live near Hamamatsu and I strongly encourage you to ask professional cook and not to cook raw Unagi yourself, because the blood of unagi contain toxic substances which causes severe damage especially to your eyes when not heated. This is why the most grocery stores do not handle raw Unagi and sell only pre-cooked, pre-sauced unagi packages.

BTW, seemingly the most popular unagi cuisine around Hamamatsu is "una-don"...I personally like Nagoya's "hitsumabushi" style unagi&rice better.