A Nespresso Double Espresso sounds as though it should contain exactly twice the caffeine of a regular espresso. But that is not actually how Nespresso defines the drink. A Vertuo Double Espresso capsule brews approximately 2.7 fluid ounces, or 80 ml, compared with roughly 1.35 ounces, or 40 ml, for a regular Vertuo espresso. The …
