Since most are blends, a specific varietal or vineyard names rarely appear on a Champagne label, but the type of Champagne is usually clearly indicated:
Non vintage blends wines from several different vintages to make a consistent product in a consistent house style from year to year.
Vintage uses wines from a single year. Since these wines reflect the weather conditions of the specific vintage; character and quality can vary.
Blanc de blancs, meaning "white of whites," uses only Chardonnay grapes and can be vintage or non vintage. These wines are generally lighter-bodied, with more citrus flavors.
Blanc de noirs, or "white of blacks," uses only the red-skinned Pinot Noir and Pinot Meunier varieties and can be vintage or nonvintage. These wines reflect the varieties used; they...