"Romanée-Conti" refers to the wine or vineyards in Burgundy, which are known to be the most expensive in the world.
Burgundy's AOC (a law governing the quality of French wines and agricultural products) is rated according to a detailed system of regions, districts, vineyards and villages.
In Burgundy's AOC, the first growth is called "Grand Cru", which translates to "premier vineyard".
One of these Grand Cru vineyards is Romanée-Conti, which grows Pinot Noir in the village of Vosne-Romanée.
In other words, "Romanée-Conti" is the name of the vineyard and the wine made from the grapes grown in that vineyard.
In Burgundy, vineyards are divided into small plots, and even those plots are generally owned by multiple producers. However, Domaine de la Romanée-Conti (DRC), famous for Romanée-Conti, is a wine producer that owns a single vineyard by itself.
Romanee-Conti is a very expensive wine, and even in the worst years it never falls below 1 million yen, with many priced at over 2 million yen.
In addition, clones of Romanée-Conti saplings exist in various countries around the world. In New Zealand, there is an anecdote that when the saplings were illegally smuggled into the country, a customs official at the time secretly grew the confiscated saplings in his own field. Currently, wine made from the grapes is also on sale.