Yuzu pastilles

Yuzu is a citrus fruit from Japan, where it is used in many dishes. Here, the fresh fruit is very difficult to come by, but there are several brands of bottled yuzu juice available. It is rather less sour than a lemon, with a flavour somewhat reminiscent of mandarin orange. The jelly from this recipe is a wonderful mouth refresher, and a very versatile element for use in starters and desserts.

Makes 700ml.