Château de Béru is a Burgundy wine estate located in the village of Béru in the Yonne department and which produces Chablis wines, all made from Chardonnays planted in the estate's plots. The wines of Athénaïs de Béru bring together the cuvées of the negociants, mainly made from grape varieties and terroirs emblematic of the Yonne and which are produced in partnership with winegrowers who have adopted the same organic or biodynamic approach as the estate. They are all certified organic from the 2020 vintage.

The history of the vineyard at the castle dates back to the 13th century, with a winemaking activity dependent on the Cistercian abbey of Pontigny. The wall, and fortification of the village of Béru, forms part of the enclosure of the Clos Béru, the foundation of which is attested at this time. At the end of the 19th century, the phylloxera crisis led to the uprooting of the château's vines and the sale of the family trading house. In 1987, Éric de Béru replanted 15 hectares of vines, including Clos Béru, which he farmed directly, while the other plots were leased.

In 2003, Eric's daughter, Athénaïs, joined the estate and undertook the takeover of the leases in direct exploitation, allowing the production of the first vintage of Clos Béru Monopole in 2005. In 2006, the estate began a conversion to organic farming and in 2009, all of the estate's vines were cultivated organically while the first biodynamic trials were carried out, with the entire estate switching to biodynamics in 2010.

In 2010, Athénaïs began trading with the aim of vinifying other Yonne grape varieties produced with the same approach as at the estate. In 2020, the estate undertook the construction of a new vat room with high environmental value designed for the Zero Carbon workshop.