Wow! It is really cool, the variegated fruits!! But unfortunately not hardy for Germany, but still possible in a large warm greenhouse or large wintergarden.
But there is also a hardy alternative for Ae Ae Variegated, this is Musa basjoo 'Variegata'. One friend in Walbeck/Germany has two or three young plants of Musa basjoo with variegated trunk, also presented in my book. Even the pseudotrunks are variegated! When they do pup, then I want one for my yard, a hardy Ae Ae Variegated!
Happy banana growing
Joachim