To get the best Cola available you have to go to the country where they invented the automobil.
In 1931, Karl Flach registered the brand "afri cola" in Cologne, Germany. Afri Cola became quite sucessful after the war, having one of the best advertising campaign ever:
The success of Afri Cola also had something to do with the caffeine content. It was five times higher than Coca Cola!
History of Afri Cola...
But, as always, big business comes in and ruins the whole thing. Bad Überkinger Mineralbrunnen AG (one of the biggest soft drink producers in Germany) bought Afri Cola in 1999 and changed the formula. They reduced the caffeine content by half and sweetend the product.
Some guys in Hamburg didn't accept the course of history and rebelled. They found one of the companies, which used to produce the original Afri Cola (they had also a decentralised franchise system) who is happy to help producing the original stuff under the brand "Premium Cola" There website is
Interessengruppe Premium
Anyway. This stuff really rocks. I treated a friend of mine, who was traveling for twelve hours straight, with a bottle of Premium at 11 p.m. The next day he told me, that he could sleep 'til 4 a.m...
Anybody coming to Stuttgart I would be happy to treat with the taste of one of the best cokes in the world! As long as some is left in my stock...
Kind regards
Eberhard