This is a very delicious no-cook layered cake that is kept in the refrigerator, called Kalter Hund in German. Note that this recipe contains raw egg.
I actually haven't tried this recipe because I have one from my mother that uses coconut butter instead of dairy butter, and social tea biscuits instead of butter cookies. But there is nothing on earth quite like this dessert. I've had this every Christmas since I was old enough to chew food. My mom still makes about 10 of these every Christmas and gives them away, and everybody always goes crazy for them. - 28 Nov 2005 (Review from Allrecipes USA and Canada)
Wow, the alcohol content in this dessert was unbelievable. This is definitely not something you want to give children. With that said, this was quite worth the time and the ingredients to make - it turned out extremely rich and flavorful. I did not use "standard" American butter cookies for this dish, however, as the holes in the center wouldn't have allowed them to lay properly in the pan. You will need European style cookies for this - they are square. I used a brand called LU Petit Beurre - it can be found in any large-scale supermarket. The rest of the recipe I did "as normal", and it worked perfectly fine. Very rich and delicious, indeed. It's well worth trying. Just watch the booze!!!! - 20 Nov 2005 (Review from Allrecipes USA and Canada)
ALWAYS use coconut oil! The original german recipe asks for coconut oil. Also, you don't have to put rum in it. My mom would make that cake a lot for birthdays (I actually am german and grew up over there) and she never put alcohol in it. - 17 Dec 2010 (Review from Allrecipes USA and Canada)