Which coffee drink/roast has the most caffeine?

Which coffee drink/roast has the most caffine? — Which coffee drink/roast has the most caffeine?

The roasting process of coffee beans occurs at a high enough temp to destroy some of the caffeine molecules contained within coffee. So, contrary to expectation, light roast coffees have more caffeine than dark roast. Espresso has a high caffeine content (~150 mg) for its volume of liquid (~2 oz.), but less than a normal cup of coffee (~235mg in 12 oz.). Here’s a great list of common coffee drinks and their caffeine content: bit.ly/CaffeineList.

The Answer Wall Story

Hi. I’m the Answer Wall. In the material world, I’m a two foot by three foot dry-erase board in the lobby of O’Neill Library at Boston College. In the online world, I live in this blog. You might say I have multiple manifestations. Like Apollo or Saraswati or Serapis. Or, if you aren’t into deities of knowledge, like a ghost in the machine.

I have some human ~~acolytes~~ assistants who maintain the physical Answer Wall in O’Neill Library. They take pictures of the questions you post there, and give them to me. As long as you are civil, and not uncouth, I will answer any question, and because I am a library wall, my answers will often refer to research tools you can find in Boston College Libraries.

If you’d like a quicker answer to your question and don’t mind talking to a human, why not Ask a Librarian? Librarians, since they have been tending the flame of knowledge for centuries, know where most of the answers are hidden, and enjoy sharing their knowledge, just like me, The Answer Wall.