AdamZ I can have it right before bed no problem. I like the dark roast stuff. [/quote said:
The Darker the roast, the less caffeine remains in the beans/ it's a heat sensitive VOC.
it will have a richer fuller flavor, but less buzz.
similar with tea. if you want decaf tea, but didn't buy any, brew some regular tea, but only let it steep for 1 minute. throw out that liquid, and re-brew the same leaves for the standard 3-5. the tea leaves release all their caffeine in that first minute or so of soak time.
when i say tea, I mean an infusion using the dried leaves of the tea tree, not some other herbal infusion that people insist on calling tea.