Step 1
In a 3-gallon container, combine sugar and warm water with fruit juice, fruit puree, and Tajin. Stir until dissolved. Add cold water to fill 3 gallons and stir until well blended.
Step 2
Pour over ice immediately, or place in an airtight container. Chill uncovered in the refrigerator until the liquid is below 41°F. Stir before serving. Add garnishes if desired.