Interest in red and white skinned onions is increasing, according to Henk de Groot, research director for the Dutch breeding specialist De Groot en Slot. Brown skins are the most popular in the UK, but the market is becoming more specific, he told an open day for growers sponsored by Elsoms Seeds. "For example the fast food hamburger market is looking for compact varieties which hold together when sliced," he said. {{FRESH PRODUCE }}