A recipe for a sparkling herbed limeade.

1 cup fresh lime juice (about 6 limes)

¾ cup sugar

a few sprigs fresh thyme

peels from 2 limes

about 4 cups club soda

Combine lime juice and sugar in a saucepan, and heat, stirring occasionally, until sugar is dissolved.
Add peel from 2 limes, and fresh thyme, and cook a minute more.
Chill the mixture in the fridge until completely cooled (at least an hour, or overnight).
Remove lime peels and thyme sprigs, and combine syrup with cold club soda. Garnish with more thyme, if desired.