This is the recipe I used:
http://allrecipes.com//Recipe/black-forest-cake-i/Detail.aspx
But I added about 50ml of cognac to it [2/3 to the batter and 1/3 to the cherry conserve]. I also only used 28oz of canned cherries, and made the remainder with cherries I pitted and boiled for a bit. I also used 2 grated Aero Dark bars for the sides, thus having a 4 layer cake.]