A strong brew served in a small cup
Turkish coffee is unfiltered, finely ground coffee simmered in a small pot (a cezve) and served unstrained, grounds and all, in a demitasse cup far smaller than a standard mug. USDA reports it at 37 mg of caffeine per 100 g, which scales to 92 mg for a full 8 fl oz, USDA’s standard reporting size. But a traditional serving is only 2 to 3 fl oz, so the actual cup carries something closer to 23 to 35 mg, not the full 92 mg figure.
Per fluid ounce brewed, that puts it below drip coffee (about 12 mg an ounce) and far below espresso (around 63 mg an ounce by USDA’s figure), because the grounds simmer rather than being forced through under pressure.
Small cup, sometimes several rounds
Because the serving is small, it is common to drink more than one round over a visit or a meal. Three demitasse cups at the low end, about 70 mg total, sit well under a single 8 oz mug of drip coffee. Someone drinking a full 8 fl oz worth across several refills, 92 mg by USDA’s figure, is closer to that mug.
Where it fits in a day
Even a generous run of Turkish coffee stays under the 200 mg single dose EFSA assessed as safe for healthy adults, and it takes roughly four full 8 fl oz equivalents, close to 370 mg, to approach the 400 mg daily figure the FDA cites for healthy adults. The grounds left in the cup are not swallowed, so they don’t add to the dose.