# Components:
→ 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
# Directions:
01 - Fill two serving glasses with ice cubes to chill.
02 - Measure and pour 3.4 fl oz cold brew coffee into each glass.
03 - Gently pour 3.4 fl oz tonic water over the back of a spoon into each glass to preserve effervescence.
04 - Stir each glass once or twice with a spoon to marry the layers without removing carbonation.
05 - Express orange zest over each drink, drop the zest in, and add an optional orange wedge to the rim.
06 - Serve immediately while cold and sparkling.