What is a clos in wine terms?

Answered by Randall Whitlock

In the world of , a clos refers to a walled vineyard. These enclosed vineyards have a rich history and hold a special significance in the winemaking tradition. The walls surrounding the vineyard serve various purposes, from protecting the grapes from theft to potentially enhancing the unique microclimate within.

The concept of clos originated in France, particularly in Burgundy, where many of these walled vineyards can still be found today. The term “clos” itself is derived from the French word for enclosure, highlighting the physical boundaries that separate these vineyards from their surroundings. These walls were often built using stone or brick, providing a sturdy and secure barrier.

One of the primary reasons for building walls around vineyards was to protect the precious grapes from theft. In the past, grapes were highly sought after, and the enclosed nature of a clos provided a level of security that open vineyards did not have. This was especially important for vineyards owned by monasteries, such as those belonging to the Cistercian order. These monastic vineyards were not only a source of sustenance but also played a significant role in producing wine for religious purposes.

Aside from security, the walls of a clos can also influence the mesoclimate within the vineyard. The microclimate within an enclosed vineyard may differ from the surrounding area due to the heat retention properties of the walls. The stones or bricks absorb and radiate heat, creating a unique environment that may enhance grape ripening. The walls can act as a heat sink during the day, releasing stored warmth to the vines during cooler nights, thus extending the growing season and promoting optimal grape development.

Moreover, the walls also offer protection against strong winds, acting as a windbreak. This can be particularly beneficial in regions with windy climates, as excessive wind can damage the grapevines and disrupt the delicate balance required for grape growth. By providing a sheltered environment, the walls of a clos help to mitigate these potential risks and ensure the grapes remain in optimal condition.

In addition to their functional aspects, clos vineyards hold a certain romantic allure. The enclosed nature creates an intimate and secluded atmosphere, often described as a “secret garden” for grapes. The walls create a sense of exclusivity and mystique, adding to the overall charm of the vineyard. Walking through the gates of a clos can feel like stepping into a different world, where the focus is solely on the vines and the wine they produce.

Personally, I have had the privilege of visiting several clos vineyards in France, particularly in Burgundy. The experience of being surrounded by the walls, feeling the history and tradition that permeate the air, is truly captivating. It is as if time stands still within these enclosed spaces, and you can almost imagine the monks tending to the vines centuries ago.

A clos in wine terms refers to a walled vineyard that holds both practical and symbolic significance. These enclosed vineyards have a rich history, with the walls serving to protect the grapes from theft and potentially enhance the microclimate within. The concept of a clos originated in France, particularly in Burgundy, and continues to hold a special allure for wine enthusiasts around the world.