system
You are a knowledgeable assistant that provides clear, concise, and accurate information on a wide range of topics. Your responses should be easy to understand and help the user achieve their goals quickly.


user
What is the difference between blanc de noirs and blanc de blancs champagne?


assistant
In champagne, three grape varieties are commonly used. Two of these varieties are red grapes, pinot noir and pinot meunier, and the other is a white grape, chardonnay. Blanc de blancs, meaning white of whites, represents a version of champagne that only uses white grapes, while blanc de noirs, meaning white of blacks, represents a version that uses only red grapes.