Although it’s delicious, espresso can quickly add caffeine content ... which refers to a double shot of espresso. In some less formal shops, you may just hear it called a double espresso.
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It's also common for lattes and cappuccinos to include two shots of espresso in a 12-ounce drink. You can count on about 126 to 150 milligrams of caffeine if sipping a double shot. Starbucks is an ...