Clos Cristal, a very unique vineyard was a donation from the late Antoine Cristal to Les Hospices de Saumur, the local hospital of Saumur in 1928. Many winemakers were in some way involved in the project at Clos Cristal and many of them found their inspiration to start their own projects during their time working there.

After a hard-fought battle to try to keep the existing project going at Clos Cristal, the Hospital and City of Saumur decided to put a stop to everything.

That's when Côme Isambert, with help from Francois Saint-Lo & other friends in the natural wine scene worked to rescue the last vintage of grapes in 2015. Cristal Closed is the result of their labor, having rescued the grapes and making a wine without additions.

This wine is the last to be made from the infamous Clos Cristal estate when it was still organic and farmed with shire horses. Hence the name, Cristal Closed.