What is a yuzu?
The yuzu is a tart, aromatic East Asian citrus fruit that tastes like a heady mixture of every citrus fruit you can imagine and looks a bit like a miniature yellow or green grapefruit with uneven skin.
The yuzu is native to China but is now widely cultivated in Japan as well as California.
Yuzu kosho is a spicy Japanese sauce made from the zest of yellow or green yuzu, chile peppers and salt.
Yuzu is also a main ingredient in ponzu sauce.