# What You Need:
→ Base
01 - 6.8 fl oz cold brew coffee, chilled
02 - 6.8 fl oz tonic water, chilled
→ Garnish
03 - Zest of 1 orange (plus an orange wedge, optional)
04 - Ice cubes, as needed
# Directions:
01 - Fill two serving glasses with ice cubes to chill.
02 - Pour 3.4 fl oz chilled cold brew coffee into each glass.
03 - Gently top each glass with 3.4 fl oz chilled tonic water to preserve carbonation.
04 - Stir each drink once or twice with a spoon to integrate the layers without losing effervescence.
05 - Express orange zest over each glass and drop the zest in; add a wedge if desired.
06 - Present immediately while cold and sparkling.