What the Regulation Says
The Montagny cahier des charges, homologated by the decree of 14 November 2011, names forty-nine climats that may follow the appellation and the words premier cru. The list runs alphabetically from Champ Toizeau to Vignes sur le Cloux and spreads across the four communes of Buxy, Jully-lès-Buxy, Montagny-lès-Buxy and Saint-Vallerin. Les Crêts is not on it, and it is not in the climat delimitation this site works from either. The premier cru parcel boundaries for Montagny were approved by the national committee on 31 May 1991, and the name has never been part of them.
Where the confusion most likely originates is fifteen kilometres to the north. Mercurey has a genuine premier cru called Les Crêts, worked by growers including Domaine Ninot, and it is easily transposed onto the Chalonnaise's other white appellation. Anything offered as Montagny 1er Cru Les Crêts is either a listing error or that transposition.
What Is Actually in the Bottle
The Montagny Les Crêts that does exist is a village-level lieu-dit, and effectively one producer's wine. Domaine Feuillat-Juillot farms it as a monopole of a single hectare on the crest above Montagny-lès-Buxy, facing east on clay and limestone with limestone dominant, from vines of roughly twenty-five to twenty-eight years. Merchant technical sheets are consistent on those numbers, and since the parcel carries no premier cru delimitation there is no official surface figure to check them against. The fruit is picked by hand, fermented and raised in stainless steel with around eight months on the lees, and sees no new oak.
Françoise Feuillat-Juillot, daughter of the Mercurey grower Michel Juillot, established the estate and now runs it with her daughter Camille. Its fourteen hectares are otherwise spread across thirteen Montagny premiers crus, which is very probably why a village bottling from the same cellar gets promoted by association.
The wine is the domaine's taut, unwooded style: hawthorn and white flowers, citrus and crisp orchard fruit, a lean and chalky finish with a shell-like note that the stainless-steel raising leaves intact. Tim Atkin has scored recent vintages in the high eighties to ninety. A richer cuvée from the same ground, Les Crêts L'Audacieuse, has also been bottled. None of it is premier cru, and none of it needs to be.