o.O The black coffee do exist. You can see a black coffee in your needle (a tool) for coffee pack. Although I don't know how to get it, but I heard you can get them from the surprises.

Black Forest Cake is a very rare compound. You need good alchemy skill and many luck to get it. Not easy to compound. -_-0

The Blessed Bow is also very hard to compound, but I heard some people succeed with that recipe. Especially my friend with alchemy level 18.