"It's not been a bad season and some growers have had their best crop for many years," he said. "But squirrels make it almost impossible to harvest them dry any more. Instead, you have to bring them in green and store them, which means you have to do the job by hand. But Waitrose has been selling them green this year."
Adam said the Italian-bred variety Tonda di Giffoni stores well and is recommended for UK growing.
Meanwhile, the success of cobnut oil, produced by Hurstwood Farm near Sevenoaks, is providing a market for other growers' nuts, though it still remains "very niche".
Adam said the association is seeking "the lowest form" of EU protected status for Kentish cobnuts.