Yuzu is a little citrus fruit from Japan that packs a big punch. It tastes like sour mandarin crossed with lemon, with plenty of heady floral top notes. It’s tricky, but not impossible, to buy fresh yuzu in the UK. Try looking online (thewasabicompany.co.uk occasionally has them), in specialist Asian grocers, or going directly to a wholesale fruit market.
But be warned, they’re pricey – one small fruit can set you back around £6. Bottled yuzu juice is increasingly easy to get hold of and, providing you get pure juice it comes a pretty close second in terms of flavour. However, the zest has much to offer in terms of floral intensity so if you see a fresh one, buy it!