There isn’t a substitute for it, but if you can’t find it at your local Japanese market (where you can also buy bottled yuzu juice), use light soy sauce diluted with some water to taste.
Our recipe uses a half-water ... so it is runny or thick. Pour sauce on fish and top with fine strips of yuzu zest. Ryohei Hayashi is the owner-chef of Tenoshima, a Japanese restaurant in ...