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How Buzzed Are You Right Now?
ByIt depends on what you had for your morning coffee:
If your morning cup came from a commercial roaster who included Robusta in the blend, we have another level of complexity. Caffeine content in these coffees, in one study, varied between 1.16 and 4.0%. A straight 12 oz. cup, using 20 grams of the 4% coffee, probably wouldn't taste very good, but would definitely provide more buzz: 800 milligrams of caffeine.
As with most things, the more one learns, the more complex a topic becomes and, in a sense, the less one knows. To attempt accurate generalization:
• Arabica averages about half the caffeine as Robusta.
• The cultivar determines the caffeine content.
• Degree of roast has no meaningful effect on caffeine.
• An espresso made from 100% Arabica, on average, has about 70 milligrams of caffeine per shot; a 12 oz. cup of drip coffee made my way in a press pot, using two scoops of coffee per 12-ounce cup -- would have 200 milligrams.
