Traditionally, people define a tonic as a substance that stimulates well-being — invigorating, restoring, or refreshing you. An herbal tonic is a formula made from various herbs that people believe ...

If you think that's just tonic water in your drink, Nick Kokonas would beg to differ. There's more to it than you might think. The Chicago bartender took a deep dive into the fraught history of tonic ...