In my personal experience, the wines I have tried in the past that aged gracefully have been the following (all notes from Berry’s):
Moulin Touchais dates back to 1787, when the Touchais family first managed the wine estate. Eight generations on, it is still family owned and is amongst the most traditional properties in the Loire Valley. The traditional methods of viticulture are still in place; low-yields, careful harvesting and meticulous winemaking. Although they have been built upon and improved over the years.
Moulin Touchais has one hundred and fifty hectares of vineyard, thirty five of which are dedicated to sweet wines of the Chenin Blanc grape. The harvesting strategy is to pick 20% of the grapes under ripe so they are still fresh and high in natural acidity, and 80% are picked late with the grapes yielding high sugar levels and concentrated flavours. This creates the smooth and elegant style of a Moulin Touchais wine. The fermentation process is spread over several weeks, and the wine is bottled early and cellared for a minimum of ten years before leaving under the Moulin Touchais name.
Le Mont, Domaine Huet
The entirety of the vineyard plantings at the estate were given over to the versatile and often under-appreciated Chenin Blanc. Climate plays a huge part in the wine-making in each vintage with warmer years creating unctuously sweet wines (mo?lleux for which Huet is renowned and doux the sweetest of all styles). Cooler vintages result in fruit which is used in the production of vivacious demi-sec, bone-dry sec or pétillant sparkling wines. It is important to emphasise that regardless of the sweetness level, the hallmark of Chenin Blanc and indeed Domaine Gaston Huet is an unmistakable freshness and natural acidity which permit the wines to age for centuries
Biodynamic techniques have been used at all of Domaine Huet’s vineyards since 1990. The estate comprises three vineyards, all with their own unique blueprint and personality: Le Haut-Lieu, Le Clos du Bourg and Le Mont. The original vineyard, Le Haut-Lieu (literally meaning ‘the high place’) surrounds the house and extends for some nine hectares. The soil is made up of three metres of clay at the surface, underpinned by Vouvray’s famous sedimentary limestone. Its wines are opulent and approachable when young but are genuine vins de gardes and benefit from long-term ageing.
Le Clos du Bourg, which was purchased by Gaston in 1953, is the oldest site in the appellation of Vouvray, dating back to the eighth century. The allure of this vineyard is not entirely contained within its neat and historic walls but moreover its reputation for producing formidable sweet wines. The final musketeer completing the trio is the most famous, Le Mont, with its green-tinged soils and late-harvesting vines from which Gaston produced his longest-lived and arguably most famous wines.
Chateau d`Yquem is often described as the greatest sweet wine in the world. After centuries of family ownership, Yquem was finally sold in acrimonious circumstances to Louis Vuitton-Moët-Hennessy in 1999. However, its former owner and director Alexandre de Lur-Saluce remains in charge.
Yquem is located on the highest hill in Sauternes and enjoys the best growing conditions in the whole appellation. The 110-hectare vineyard is planted with 80% Sémillon and 20% Sauvignon Blanc. Only fully botrytized fruit is picked by the 150 highly skilled pickers and yields are so low that each vine produces only one glass of wine.
Yquem is fermented in oak barrels (100% new) and is left in barriques to mature for up to 36 months. Intensely opulent when young, Yquem develops an extraordinary complexity and exotic richness when fully mature, with the best vintages lasting for over 50 years. Château d’Yquem is classified as a 1er Cru Classé supérieur.