Yuzu is a citrus fruit resulting from the cross between a wild mandarin and a lemon. It originated in East Asia (most likely China) and is widely grown in Japan. It resembles a small, bumpy grapefruit (diameter approximately 6 cm). The peel of this fruit is irregular, but it comes off easily and is particularly fragrant. The little flesh it has is also fragrant.
Yuzu is available throughout the year from grocery stores selling exotic foods, or fruit and vegetable dealers with a good range of exotic fruits. Stores also sell products, such as yuzu juice, grated yuzu zest, and hot sauce with yuzu, among others.
Yuzu is used in both sweet and savory dishes. It can be used to enhance sauces, for instance to accompany scallops or whitefish, and it can be used to dress fish tartars and add flavor to a salad. Mixed with soy sauce, it is one of the ingredients of ponzu. It adds an intense flavor to all kinds of cakes and pastries, from the most simple cake to a citrus tart. It is often combined with black sesame seeds in different entremets and cakes.
Like lemons and lines, yuzu should be stored in the refrigerator at 4°C. It should be washed and dried beforehand. Stacking should be avoided in order to prevent mold from appearing.
Yuzu has the same nutritional properties as other citrus fruits. But given that it is not typically used every day and then only in small amounts, it makes little contribution to a healthy diet.