A legal trademark (abbreviation R.D., Recently Disgorged) of the Champagne House Bollinger, which is reserved for it. It was introduced around 1960 by the former director of the house, Christian Bizot (1928-2002). The "RD" and exact date on the label testify that the champagne in question was "recently disgorged". The essential thing here is not the relatively imprecise concept of recent disgorgement (because every champagne was disgorged at some point recently), but that a champagne declared in this way was stored for a particularly long time before disgorgement and that the fine yeast substitutes were thus in contact with the wine for a particularly long time.
In the past, you needed a wealth of encyclopaedias and specialist literature to keep up to date in your vinophile professional life. Today, Wine lexicon from wein.plus is one of my best helpers and can rightly be called the "bible of wine knowledge".Prof. Dr. Walter Kutscher
Lehrgangsleiter Sommelierausbildung WIFI-Wien