Sparkling Strawberry Rhubarb Sour

1. Add the juice of 1 lemon, 1 oz of apple cider vinegar, 2 oz of strawberry rhubarb syrup, 1 oz of aquafaba, and 1 serving of lemon natural calm magnesium powder (if desired) to a cocktail shaker and shake.
2. Grab a cocktail glass and add a large ice cube.
3. Pour the glass halfway with sparkling water.
4. Fill the rest of the way with the strawberry rhubarb mixture from the shaker.