That’s not true. ~100mg in a cup of coffee, 40mg in an espresso shot, the same 40mg in a can of Coca-Cola (and ~60mg in Diet Coke).

Caffeine in an espresso shot (and conversely one cappuccino) is ~63-77mg[1], and one can of Coca-Cola & Diet is 32mg & 42mg[2].

[1] Nespresso is 63mg (5g of coffee), "average" espresso is 77mg (7g of coffee) https://www.caffeineinformer.com/caffeine-content/espresso

[2] https://www.coca-cola.co.uk/ingredients/caffeine/the-caffein...

It would seem some espresso do have the same caffeine as a can of coke, some even clock in less, but ya on average it seems to have about double the amount.

That said, most coffee shop serve double espressos as standard, so if you factor that in, it seems on average your cup of cappuccino might have four time the caffeine than a can of coke.

That's true, forgot about that part (and why I take them into account as "2 shots" in my max daily coffees).

There's also a couple Nespresso (maybe Keurig and others, too) capsules with double the caffeine content: Kazaar and Napoli.