How do you make a vermouth?

There are over sixty botanicals that may be used in making vermouth, though most brands of vermouth use somewhere between a dozen or two dozen. Some of the most common are orange and lemon peel, wormwood (from with vermouth gets its name), chamomile, lavender, rose petals, cloves. You can find more information in The Mixellany Guide to Vermouth by Anistatia Miller and Jared Brown (Mixellany Limited, 2011, www.mixellany.com). It is the first comprehensive book devoted to vermouth.