[Wakayama] 1 Day in Yuasa Japan: Town of Japanese Soy Sauce-Part 1 June 18, 2019 by summerkid_summergirl Yuasa ( 湯浅町, Yuasa-cho ) is a small town located in Arida, Wakayama prefecture, Japan. It is where Japanese soy sauce born, famous for shirasu-don. Try shoyu ice cream when you are here!