You can think of Champagne in the same way. Big producers like Moet & Chandon and Veuve Clicquot are kind of like Starbucks. They buy grapes from thousands of farmers, blend them together to create a consistent house style, and distribute their wines pretty much everywhere. A small fraction of farmers, though, don’t sell their grapes to the big houses. Instead, they use them to produce their own wines. They make grower Champagne.