British raspberries are measuring up to 50% sweeter than usual according to growers, after a warm spell followed cooler spring temperatures. The raspberries this season are testing at sugar levels of 11 to 12 on the Brix scale, compared with average readings of around eight, the biggest jump growers have seen in years. The Brix scale measures the approximate sugar content of a fruit or fruit juice, with a higher Brix reading generally indicating a sweeter, more flavourful, an