In Espresso, How Much Coffee Do a Shot and Single/Double Servings Refer To?

In a coffee shop you'll hear orders like "an iced Americano with an extra shot, please" or "a double espresso, thank you."

From context it's easy to guess that a "shot" is the unit espresso is served in. But if someone asked you exactly how much coffee a shot contains, could you answer?

What Does "Shot" Mean?

FrontStreet Coffee has looked into the origin of "shot" and found several differing explanations. What's clear is that today "shot" is primarily a unit of measurement in drinking culture, referring to a small glass of spirits—traditionally one ounce, about 30ml. Shot glasses became popular in the mid-20th century, when bars offered these small glasses of spirits that could be "downed in one gulp," giving customers a faster, cheaper, and more convenient way to drink.

Much like at the bar, "a shot" in a coffee shop means a single espresso—a small cup of concentrated coffee of about 30ml.

Why Does Espresso Use "Shot" as Its Unit?

In Italian, "espresso" means "fast": a barista could serve a rich, crema-topped coffee in under a minute, and customers would knock it back in two or three sips standing at the bar—an efficient caffeine hit. Since precise tools like electronic scales weren't available back then, baristas estimated by eye, using a spouted portafilter to divide the brew into two 1-ounce shot glasses and judging extraction by the cup's capacity. And because espresso of that era had a heavy, intense flavor closer to spirits than to brewed coffee, "shot" was a fitting word.

Of course, eyeballing it leaves plenty of room for error and makes consistency hard. That's why baristas today standardize espresso by liquid weight instead. (Crema's volume and weight aren't equal, so a shot crowned with thick crema actually holds less liquid than one with thin crema.)

How Much Coffee Is in a Shot?

For a long time, pulling shots followed the classic barista formula: a single shot used a single basket—7 grams of grounds yielding 30ml of espresso—while a double shot used a double basket, 14 grams of grounds yielding 60ml.

Later, as pressure machines improved and weight-based measurement took over, extraction targets shifted from liquid volume to actual weight, making precise control possible. And with steady gains in bean quality and roasting, the accepted ratio range narrowed: with a double basket, whereas a single espresso once meant 14g of grounds extracting 60ml, today it typically means around 18g of grounds extracting 36g (roughly 50ml) of liquid.

How Much Is a Shot Today?

Order "a shot" at two different shops and you might get a tiny cup holding just twenty milliliters at one, and forty to fifty milliliters at another. Why such a gap?

Because most shops now default to double baskets. Each barista develops a bespoke extraction ratio for their specific beans—a particular dose yielding the best-tasting liquid in a single pull. With different blending philosophies and ratios from shop to shop, the resulting espresso can vary by ten to several tens of grams, and every shop sets its own standard.

FrontStreet Coffee, for example, uses a 20-gram basket dosed with 19.8 grams of grounds, extracting 38 grams of espresso in 29 seconds—that's our "double shot." If a customer wants just a single, the barista splits the pull through a spouted portafilter and serves one cup: a single shot of roughly 19 grams.

- END -

FrontStreet Coffee Recommendation

Now that you know what a shot is, here are two blends that shine through it—and through an Americano:

FrontStreet Classic Blend — a traditional Italian-style recipe combining Indonesian Mandheling, Brazil Red Bourbon, and washed Vietnamese coffee. Asian low-acid richness and herbal-woody tones meet American balance, smoothness and creaminess, with butter, nut, spice and dark chocolate aromas in extraction. Wild character and abundant crema make it equally at home in an Americano or a latte—ideal for espresso newcomers.

FrontStreet Strawberry Candy Espresso Blend — a medium roast for when dark espresso gets tiring. It unites washed, natural, and honey-processed Arabica from Colombia, Costa Rica, and Ethiopia in one blend: rose-like aromatics, low bitterness and mild acidity, with grape, dried blueberry, sweet orange and candy notes in an Americano or latte, layered flavors, and a distinct almond note on the finish.