Fill a pitcher halfway with ice. You want your drink cold from the start.
Add cherry juice, lime juice, and simple syrup. Give it a quick stir to mix.
Top it all off with sparkling water or lemon-lime soda. Stir gently to keep the fizz alive.
Taste and adjust sweetness or tartness. This is your drink, your rules.
Pour into glasses, garnish with lime slices and cherries, and sip like it's summer every day.