You can purchase 100% fruit roll-ups (or even make your own). Sometimes it is called fruit leather. Now, you can really pack some nutrition in with varieties that include pureed vegetables and still mostly taste like fruit.
But why has no one invented coffee leather? I would buy it!
Imagine a coffee bar that tastes like good, strong coffee without icky sweeteners. I've looked up coffee jello, coffee jerky, coffee paste, coffee leather... all with no luck.
If you have any ideas on how to make a coffee bar/leather/roll-up/jerky, please let me know.