Secret Formula: The Inside Story of How Coca-Cola Became the Best-Known Brand in the World

by Frederick Allen

Merchandise No. 1 was sugar, No. 2 caramel, No. 3 caffeine, No. 4 phosphoric acid, No. 5 the combination of coca and kola extracts, No. 6 glycerine, and No. 7X the super-secret blend of flavoring oils.