The lady who owns Eanthia Village Beach Resort in Gerani used to do lessons in traditional Greek cookery. I don't know if she still does. Drive along the old National road through Platanias to Gerani. Immediately after the turn for the New National road a road forks off to the right. Follow this for a few km. You will pass two tavernas close together, Little Paradise and Bossa Nova. Eanthia Village is on the right a few hundred metres after Bossa Nova.
As an aside, Bossa Nova does excellent barbecued pork ribs and sells a very wide range of foreign beers, e.g. UK, French, Belgian, Dutch, Danish.