To be labeled True Champagne, a wine must be made in the Champagne region of France, using only Pinot Noir, Pinot Meunier or Chardonnay grapes grown in that region. Further, it must get its bubbles by a double fermentation process , once in the barrels, and the second in the, bottle.
Drinking champagne quickly causes the alcohol to enter your bloodstream too quickly which often causes headaches. Sipping slowly allows one to better taste the wine but, also, to dissipate the bubbles before swallowing.
The term for opening a bottle of Champagne using a sword is called, "Sabrage"
The largest bottle of Champagne is called Melchizedek (30 liters, 40 standard bottles or 240 glasses) who was the King and the Priest in the Book of Genesis who blessed Abraham; his name meaning, "My king is righteousness".