(Decanter) - A series of events worldwide are being planned to celebrate International Grenache Day tomorrow. The idea of International Grenache Day grew out of the success of last year’s International Grenache Symposium in the Rhone Valley. Nicole Rodet, owner of the Chene Bleu estate in Provence and founder of the Symposium, said the serious purpose behind the event is to not only encourage people to discover Grenache, but also to protect ancient Grenache vineyards from being grubbed up to make way for more commercial varieties.