1-2tablespoonsmaple syrup or other sweetener, like honey
Put all the ingredients in a blender or food processor and process until the mixture is smooth and frosty. You may need to add a bit more water at a time to loosen up the mixture. I found it liked to get stuck in my not-so-powerful blender. Try not to over water it or it will lose some flavor.
Serve immediately (in frosted glasses, if desired!).