Add tequila, hibiscus syrup, and lime juice to the shaker.
Shake for 10-15 seconds until well chilled.
Fill a highball glass with fresh ice.
Strain the mixture into the glass.
Top with tonic water and stir gently with a bar spoon.
Garnish with a lime wheel and dried hibiscus flower.
Notes
The hibiscus syrup can be made at home by steeping dried hibiscus flowers in hot simple syrup for 15 minutes. Strain and cool before using.Store leftover hibiscus syrup in an airtight container in the fridge for up to 2 weeks.For a less sweet version, reduce the hibiscus syrup to 3/4 oz or add an extra splash of lime juice.Choose a quality silver tequila - the clean taste works best with the floral notes.