*I suggest not reducing the syrup, it's necessary for a non-icy scoop-able texture once it's frozen overnight. If you DO reduce the syrup, it's best to serve this as soft-serve right from the blender, or better yet, use this flavor combination to make a
smoothie bowl.A high speed blender, like a Vitamix, will work best for this recipe.
I find tart cherries (sometimes called sour cherries) at Wheatsville Coop in Austin, and occasionally at Whole Foods.