Did you mean: 1991 DFL-Supercup
The 1991 DFB-Supercup was the fifth edition of the DFB-Supercup. Uniquely, because Germany had just been reunified, the competition featured four teams instead of the usual two: The previous season's Bundesliga and DFB-Pokal winners, 1. Wikipedia
Champion: 1. FC Kaiserslautern