What is the best way to sweeten extra dark melted chocolate?

Question

It's 80%.

Answer 1

Any sweetener--but better be careful not to burn the chocolate. You'll be sorry if you do.

Answer 2

I use agave nectar or honey-depends on what your final recipe would be.  You could also use sugar, maple syrup, or other sweeteners-depends mainly on if your end product will be wet or dry.  If you are just wanting to eat it plain, you could melt it, add agave (etc) and then reharden it in a  candy mold (ice cube trays work well too) and eat it as a chocolate when it has hardened.  You can also add a little essential oil, such as orange, raspberry, peppermint, etc. to give it another flavor element.  

Answer 3

Powdered sugar?

Answer 4

icing sugar its very sweet so it would sweeten anything !