What are the best sources of proanthocyanidins?

Berries (e.g., blueberries, raspberries, blackberries, strawberries) are a rich source of proanthocyanidins. Other food sources include: red grapes, cherries, chocolate, pinto beans, black beans, kidney beans, various nuts (e.g., cashews, walnuts, ...

from The World's Healthiest Foods http://ift.tt/1xOeuSE