Prepare the 1:2 Simple Syrup: Mix 1 part sugar with 2 parts warm water. Shake vigorously until the sugar dissolves completely. Refrigerate in a glass jar for extended use.
Muddle the Cherries: Pit the cherries and add them to a cocktail shaker with the basil leaves. Muddle thoroughly to release as much juice as possible.
Mix the Drink: Add the three flavour drops, simple syrup, lemon juice, and ice to the shaker. Shake well for 5–6 seconds until the ice begins to melt, which helps dilute the cherry juice.
Strain and Serve: Strain the mixture through a fine mesh sieve into a chilled glass. Top with tonic water, garnish with wildflowers, and add more ice if desired.