Are there any specific guidelines for maintaining their quality over extended periods? What are the rules about the sale and auction of rare or collectible bottles of champagne cognac?

10-year-old from Grande Champagne. Golden in color, offering bright, warm notes of apricot, plum and orange peel, with toasted oak, baking spice and bit of ... This French favourite features lively fruit and toasted oak. The finish is long and satisfying, especially with spiced cookies. This XO already has copper coulour, outstanding aromas: very complex nuances of dry flowers and dry fruits. Hints of nuts and spices. Very soft tannins with an ... Between Grande and Petite Champagne, Fins Bois and Bon Bois, it's not easy to make a choice. Discover what are the different Cognac crus and their ... This XO already has copper coulour, outstanding aromas: very complex nuances of dry flowers and dry fruits. Hints of nuts and spices. Very soft tannins with an ... A Fine Champagne appellation Cognac featuring a blend of eaux-de-vie from the two best Cognac crus, namely Grande Champagne and Petite Champagne. On the nose it is stylish, subtle, delicate and almost ethereal. Fruity, slightly candied notes of peach, dried figs and apricot jam over a base of more floral ... A Grande Champagne of 5 to 6 years of age can reveal a rare dimension to a cognac which remains relatively young. This exceptional Cognac, from the personal reserve of Jean Halley (1872-1932), embodies the quintessence of Grande Fine Champagne. Description ... DOBBÉ Cognac Héritage Petite Champagne is the most noble in the range of cognacs produced by the house of DOBBÉ. Its perfect balance is the result ...