In a cocktail shaker or sturdy glass, lightly muddle the sage, lime juice, and agave (if using).
Add the pineapple juice and a handful of ice. Shake well to chill and blend the flavors together.
Strain through a fine-mesh or cocktail strainer into a glass filled with fresh ice.
Top with ginger beer and stir gently. Garnish with a lime wedge.
Notes
If you can't find light ginger beer, you can use regular ginger beer but it will have a higher sugar content. Substitute pomegranate juice or cranberry juice instead of pineapple juice.Substitute a prebiotic ginger ale to increase the nutritional benefits. See full blog post above for more variations and substitutions.