In other words, in just 1 oz of espresso solution we get about 30-50 mg of caffeine in solution. Whereas in espresso, even though we start off with about a 1/2 to 1/3 less caffeine, remember all this caffeine is contained in just 1 oz of liquid or expressed numerically as 30-50 mg/oz. In the case of drip coffee, we need to divide the 65-120 mg of caffeine by its serving size (8oz), resulting in a caffeine concentration of approximately 8.1 - 15 mg/oz. That means that for every ounce of coffee solution we can expect about 8.1-15 mg of caffeine present. The problem with this type of comparison is that we are not comparing "apples to apples".Ī more correct approach would be to compare the two beverages in terms of their caffeine concentration per ounce (oz). Well, not exactly!! Comparing Espresso to Drip Coffee So there we said it - drip coffee has MORE caffeine than espresso! Case closed, go home, right?
Remember these are averages, so the exact amount will vary based on coffee establishment.Īs you can clearly see drip coffee with approximately 92.5 mg contains a larger concentrations of caffeine than espresso (40mg) - how much more? On average about 2.3x more! Now, if we look at the level of caffeine contained in a typical cup of drip coffee and espresso, those figures come in at about 92.5 mg and 40.0 mg, respectively. Factors including as coffee type, grind size, brew time, dwell time, water temperature, roast level, blend, etc., all have a significant impact on the final extraction of caffeine.
Without getting overly technical, there are several factors to consider when brewing coffee. Short (8oz/236ml), tall (12oz/354ml), grande (16oz/473ml), venti (hot, 20oz/591ml), trenta (31oz/916ml) How much caffeine is in my cup of coffee?Īccording to the National Coffee Association (NCA), a typical cup of drip coffee (8oz) contains approximately 65-120 mg of caffeine. With such a wide variation in caffeine content, its very difficult to assess how much caffeine you are consuming from a typical cup of coffee. Starbucks Serving Size (photo credit - Benita Theda) Yes, folks, almost a quarter-gallon of coffee!
Interesting, but is this correct? Well, that depends on your perspective.ĭuring the 1950's a typical serving size of coffee was between 4 to 6 fl oz (118-177mL), but over the years our "cup" size has grown almost eight times since. Starbucks' smallest cup ("short") is 8oz, while their largest cup ("venti") is about 20-24oz.īut in 2011 Starbucks topped it by introducing the "trenta" which measured in at a whopping 31oz of coffee. What else would explain the buzz we get when we down a shot of espresso in the morning? Ask almost anyone and they will likely say that espresso has way more caffeine than regular drip coffee.
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