This is really to taste so I don't have exact measurements.
Pour Pellegrino water into a glass and leave enough room for a lime wedge and ice (About 1.5-2 cups)
Add lime juice (about 1 tablespoon) and drop lime wedge in the drink.
Squeeze mint in hand gently to release the flavor and then add to water (about 6 leaves)
Add 2-3 droppers of liquid Stevia or 1-2 packs of powered Stevia.
Stir well, taste to see if you need to add anything else, then add ice and enjoy!!!!