Servings: 1

about 2 cups ice about 2 cups ice
about 1 cup water about 1 cup water
Mio or other flavored drink mix (to taste) Mio or other flavored drink mix (to taste)
1 tsp vegetable glycerin 1 tsp vegetable glycerin

Put everything in blender and blend until smooth. Or use immersion blender. Easy Peasy.
Adjust amount of drink mix to taste. Could also use sugar free jello mix, powdered drink mixes or even flavored syrups.

Glycerine has no digestible carbs. Most drink mixes have 0 carbs. So it's free!  Glycerine has no digestible carbs. Most drink mixes have 0 carbs. So it's free!
Glycerine is classified as a sugar alcohol so could cause gastric issues for some people.  Glycerine is classified as a sugar alcohol so could cause gastric issues for some people.