What is the traditional recipe for a single shot of espresso?

The traditional recipe for a single shot of espresso is well-established within the coffee community, with specific ratios of coffee to water being crucial for achieving the desired flavor and extraction. The correct choice indicates a ratio of 7 grams of coffee to 25-30 milliliters of water.

Using 7 grams of coffee allows for optimal extraction of flavors from the coffee grounds. When this amount of coffee is brewed with 25-30 milliliters of water, it helps to create a concentrated shot of espresso that balances acidity, sweetness, and body. This range of water also ensures that the espresso has enough liquid to extract flavors effectively without being overly diluted.

In contrast, the other options suggest different amounts of coffee or water that do not reflect the traditional single shot ratio. For instance, using 5 grams of coffee may not provide sufficient grounds for a rich flavor, while an increase to 10 grams could result in an overly concentrated espresso that may be harsh. Additionally, the water amounts exceeding 30 milliliters would likely lead to a brew that lacks the intensity and character that typifies a proper single shot of espresso. This understanding of the coffee-to-water ratio is essential for baristas to create high-quality espresso consistently.