I love sangria, but I avoid sugars. According to the [NCC](http://www.ncc.umn.edu/) database, there's 300x as much sugar in sangria as in merlot.

I had this idea to try to make "sangria" with red wine + sugar-free Cool Aid + pure stevia, all blended together. It came out positively disgusting (and I like stevia)

How can I improve this combination so I get something drinkable?