I used 'ontbijtkoek' I think you can only buy this in Belgium and The Netherlands
More information on this product see wikipedia 'ontbijtkoek'(there is an english page for it!)
You can also use dry or old chocolate cake but the colour wouldn't be the same
Great idea to fool your kids of for a strange theme party
gather your materials
- a cup of water
- a slice of bread (white looks better but we never have that)
- ontbijtkoek or chocolate cake
put some cake in the bowl and add water
It is a bit improvising is it too dry add water if its too moist ad cake.
I you're happy with it and it looks very nasty scoop it on your bread
model it a bit
When the fun is over and it is time to eat just smear it out and take a bite!