Line the loaf tin with parchment paper. This will help with removing the cake at the end.
Make the Chocolate Mixture
If you have a double boiler, heat the coconut oil until hot. If not, fill a medium saucepan with water and bring to a boil. Place a heat-safe bowl over the saucepan and pour in the coconut oil.
In a separate bowl, mix the eggs with the sugar until creamy foamy white, and the sugar is entirely dissolved (five to ten minutes).
Carefully stir the cocoa powder into the egg mixture (if you work too hastily you’ll cover everything around with a thin layer of cocoa dust). Fold the warm coconut oil in the mixture.
Pour a layer of the egg/chocolate mixture (about 0.5mm) into the tin, then add a layer of biscuits on top. Repeat these steps until all of the chocolate mixture is gone. until all is used up.
Put the cake in the fridge and let it cool until the next day.
Carefully remove the Kalter Hund from the tin and remove the parchment paper scraps. Place on a decorative serving platter bottom up.
How To Eat It
Cut 1 cm slices and have a cup of hot coffee or a fancy sweet wine along with it. It’s really good and absolutely okay to have a second helping.
Notes
Note 1:If you can only find unsweetened cocoa, make a 56/44% mix, or 140g cocoa powder, and 110g sugar.
Note 2: You can substitute with any other butter cookies.