Guffens believes in making honest wines. We often discuss producers and speak about who they have learned from or have philosophies similar to. Maybe the most controversial view is his dis-belief in the term terroir. This statement is easily misunderstood or questioned, but when you hear him speak about it- it makes more sense. He wants to do what is best for each vineyard in regards to farming and picking. Ultimately it takes a human, not just terroir, to make these decisions. The decision of when to plant, what to plant, how to manage the vineyard and all of the decisions to make at harvest. Although he isn't one for terms- he has created some of his own, non-cultivation. He works the soils only once a year, but only very shallowly. He uses a mower to control growth of grass and weeds with the idea that this limits nitrogen production and soil compaction. He does not deleaf or hedge his vines, as all of these things tend to support more vegetative growth and lower acidity in his grapes. He harvests late with pretty ripe grapes. The berries are typically smaller as are yields. If ripening is varying in the vineyards, it is time to harvest. Usually multiple passes happen each harvest, something not typically practiced in Burgundy. In total, the Domaine wines’ now consist of 5.65 hectares in Vergisson, Pierreclos, and Davaye.

As important as picking ripe grapes is in the vineyard, pressing may be one of the most crucial parts of winemaking to Jean-Marie. The grapes are lightly crushed before being pressed. In the winery a modified coquard press is used (also uncommon in Burgundy). The first press and free run juice is a crucial part of their pressing. This is the juice that is lower in PH and provides the incredible acidity we find in the Guffens wines. When done correctly, it is quite magical. All of this is what Jean-Marie really thinks makes the major difference. It is different from vintage to vintage and vineyard to vineyard, it’s usually slow and meticulously done. It is more the person working the press than the press itself. The wine is then transferred for fermentation- various size barrels and concrete depending on the vintage.

Before being able to spend significant time in the Maconnais, Jean-Marie was a believer, like many others, that great chardonnay comes from the more serious appellations. He didn't have enough money to acquire vineyards at the time, so he started buying fruit and created Verget in 1990.

Verget follows the same ideals as the Domaine wines " the best wine is made using the best grapes" they have always only bought grapes in a very meticulous manner. Since 2006, Julien Desplans joined Jean-Marie and oversees all of the vineyards and purchases, while JeanMarie is still supporting with the vilification. By its original approach, Verget is a laboratory of terroirs and a creator of climates which reveals all the aspects, all the nuances and the subtleties of the same appellation. The relationships with the growers are most important, as Verget determines the vineyard management and is often doing the picking.

As with the domaine wines, the press is a crucial part of the Verget process. Each plot is pressed and vinified separately. During pressing, the person in charge is carefully watching and tasting along the way. The wines are aged on the lees and stirred depending on each cuvee and vintage. Aging is in cement tanks, stainless vats, or barrels and often the final product is a combination. There are unique cement tanks that have an egg shape and are horizontal rather than vertical which allows for natural circulation of the lees