Back (gold capsule and long gold capsule) Although these designations are not defined by German wine legislation, they are used by some producers to designate the best vintages among QmP wines. The long gold capsule denotes superior quality. The grapes used to make wines of this calibre have often been affected by noble rot. These gold caps adorn the top of the bottle, covering the cork. Bottles with gold caps are only available in very limited quantities. They automatically signify a very high quality, in the same way as the terms "crème de tête" and "tête de cuvée" used by certain producers for Sauternes wines.