Simply the zest: Michelle Darmody digs into yuzu and other citrus fruits

Yuzu is a citrus fruit from Asia that is particularly popular in Japan. It is a cross between lemon and lime with a slight hint of mandarin. We do not generally see them on shop shelves in Ireland but you can buy bottled yuzu juice — it is becoming ever more popular with chefs. The bottled juice is quite intense in flavour so you do not need too much, it can be used in either sweet or savoury cooking. Yuzu juice is good substitute for orange blossom water as it adds a similar floral note to desserts.
When buying a bottle watch out for the percentage of juice: I much prefer using one that is 100% juice rather than the weaker flavoured juices.