A standard espresso shot size is typically defined as follows:
- A single shot of espresso ("solo") is about 1 fluid ounce (approximately 30 milliliters).
- A double shot of espresso ("doppio") is about 2 fluid ounces (approximately 60 milliliters).
These volumes are made using roughly 7–9 grams of finely ground coffee for a single shot and 14–18 grams for a double shot. The espresso is noted for its concentration and is the basis for many espresso-based drinks like lattes and cappuccinos. There are also variations such as:
- Ristretto: A shorter shot, about 0.5 ounces, using the same amount of coffee but less water, resulting in a more concentrated flavor.
- Lungo: A longer shot, about 1.5 ounces, using more water, resulting in a milder taste.
Espresso shot sizes are usually measured by volume (fluid ounces or milliliters) but baristas often measure by weight for precision because the crema foam affects volume perceptions. For practical purposes though, the volume measures of 1 ounce for a single and 2 ounces for a double are standard and widely accepted.
