Pierre Ferrand's Original Formula 1840 weighs in at 90 proof (45%). Original Formula, however is not a johnny come lately but is a Grand Champagne Cognac based on an original ?three star? designated Cognac produced (the equivalent to today's V.S. designation) back in 1840. The original bottle of Pinet Castillion Cognac on which Original Formula is based was blended and distilled for use as a mixer in cocktails. About Cognac Ferrand The Ferrand estate is located in the heart of the Grande Champagne growing cru, the most sought after appellation in Cognac. Pierre Ferrand's 27 hectares are among the finest in Grand Champagne. Pierre Ferrand produces only Grand Champagne Cognacs or cognacs crafted exclusively from grapes grown in the chalky soils of the Grand Champagne Appellation d'origine contr?;l?e designation. The Logis d'Angeac is the Cognac Ferrand distillery which is located at the center of the family's vineyards in Grande Champagne.