Yuzu Vinegar is a dark, gold-coloured vinegar with a citrus taste to it.
It's made from Yuzu juice, which is more acidic than other citrus fruits, with some rice wine vinegar added to it. The proportion is a few drops of vinegar per teaspoon of Yuzu juice.
Used to dress salads with, to sprinkle on sushi, and in ponzu sauce.
Rice wine vinegar, Lime juice, or Rice wine vinegar with a bit of lime juice in it.