More agua fresca: Chicano Eats’ ponche de granada, A Cozy Kitchen’s cucumber strawberry agua fresca, Christianne Winthrop’s pineapple mint agua fresca.
1 quart watermelon purée (from about 1 1/2 quarts of cubed watermelon)
1/4 cup lime juice
1 tablespoon sugar (or to taste)
Pinch of salt
3 cups seltzer (or to taste)
Find it online: https://cardamomandtea.com/317/leftover-watermelon/