Heat over medium until the sugar has dissolved completely.
Remove from the heat and stir in the lemon-lime drink mix, lemon juice, and lime juice.
Add a drop or two of green food coloring, if desired.
Cool completely before bottling.
Storage: Refrigerate for up to 1 month.
Notes
Four Ways to Enjoy It
🍧 Pour over shaved ice for a refreshing citrus snow cone.
🥤 Mix with sparkling water for a Lemon-Lime Italian Soda.
🍋 Add to lemonade for an extra citrus kick.
🧊 Blend with ice for a frozen citrus slush.