There's not much to it. I was friends with a German Navy Pilot. I was at his home one day and he brought it out.
He said he would probably never open it. I guess I can't blame him.
Anyway, I don't drink anymore. However, he turned me onto a favorite German drink.
Take a bottle of apple schnapps and put it in the freezer. It won't freeze because of the alcohol content.
After it's good and cold, pour yourself a shot and enjoy. When I did drink it was one of my favorite drinks along with Irish coffee.
A redheaded girlfriend turned me onto the Irish coffee. Too many of them and she'd have her way with me.