Is there more caffeine in espresso than drip, or French Press?
Focus not on the brew method but on the amount of ground coffee used to make what you drink. Caffeine is easily percolated out of the ground coffee into the cup, so the amount of caffeine tends to be a direct result of how much coffee is used to prepare the beverage. Some people use little coffee, make weak dribbly espresso and get little caffeine. So a certain brew method isn’t necessarily stronger than another.