A refreshing, medium dry sparkling cider, rounded in flavour and packed with character from a blend of Dabinett and Harry Masters Jersey cider apples. Did you know? The word ‘Calculus’ was derived from the Latin for ‘small pebble’ – once used in counting. Isaac Cider calculated to get quality cider you need quality apples, handpicked from their family farm in Dorset. Refreshing and full bodied – it’s cider you can count on. But they've left it for you to put the theory to the taste.