Other than Champagne itself, other sparkling white wines are not allowed call themselves champagnes. What is the factor needed for a sparkling white wine to call itself Champagne?
Answer Grown and Bottled in France's Champagne Region
Only wine grown and produced in the Champagne region of France can be legally called Champagne. However, an exception exists for Champagne producers in California that existed before a 2005 agreement between the United States and the European Union.
Asked by Jason Forbes · Last updated 5 years ago · 3.1K views · SOURCE