The foods are rich in flavonoids that help rejuvenate the DNA in our cells as they start to lose telomeres—their protective tips—that triggers the ageing process.
Other flavonoid-rich foods that can have the same beneficial effects include red grapes, while the best anti-ageing drink is red wine.
In laboratory tests, the compounds in the foods and wine, known as resveratrol analogues, started to slow, and even reverse, the ageing process in older cells within just a few hours.
Lead researcher Dr Eva Latorre from the University of Exeter said in a statement: "When I saw some of the cells in the culture dish rejuvenating, I couldn't believe it. These old cells were looking like young cells. I repeated the experiments several times and in each case the cells rejuvenated."