This weekend (Saturday 19th-Monday 21st May) is the 2018 version of Pique-Nique chez le Vigneron Indépendant. The formula is simple you take your picnic and the vigneron supplies the wine often with visits offered along with the possibility of buying some wine to take away. Some have BB-Q facilities.
More details on the Vignerons Indépendant's website. Here is the offer of vignerons involved in Touraine. warning: this search takes a while to load. Check carefully for details as not all vignerons operate over the three days and you may need to book.
François & Julien Pinon: Portes Ouvertes
Message from François and Julien Pinon inviting people to celebrate François' 30th vintage and the first one of his son – Julien