# What You'll 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
# How-To Steps:
01 - Fill two tall glasses with ice cubes until about three-quarters full to ensure the drink stays chilled.
02 - Divide the chilled cold brew evenly and pour approximately 3.4 fl oz into each glass.
03 - Gently pour about 3.4 fl oz chilled tonic water into each glass, pouring slowly over the back of a spoon if you prefer to retain effervescence.
04 - Stir each glass once or twice with a spoon using a gentle lifting motion to marry the liquids without dissipating the carbonation.
05 - Express orange zest over each glass to release essential oils, then drop the zest in and add an orange wedge if desired.
06 - Present the drinks at once while cold and effervescent for optimal contrast between the coffee and tonic.