Mug "The Chemistry of Coffee"Celebrate the chemistry of your favorite morning elixir with this coffee mug. This bag not only holds your precious brew, but also serves as a visual reminder of the complex chemical composition that makes coffee the drink you crave. As you sip your coffee, you will think not only of the star of the show providing the necessary energy boost caffeine but also of the supporting cast. You'll find guaiacol, which gives that smoky, toasty aroma, and