Folie à Deux is a Napa Valley winery in Sonoma County, California, which is part of the Trinchero Family Estates.
Folie à Deux was founded in 1981 by two psychiatrists, who took the name from a psychiatric term for a fantasy or delusion shared by two people.
In 2004, they sold the winery to the Trinchero Family Estates, a Napa Valley wine company owned and operated by the Trinchero family.
The winery also produces three wine blends and four varietals under the name Menage à Trois.
[4] The Menage à Trois brand sold 1.6 million cases in 2009,[5] and Menage à Trois was named the "Wine Brand of the Year" by the beverage industry publication Market Watch.