What type of coffee grind is recommended for espresso?

The recommended grind for espresso is fine grind. This consistency allows for the optimal extraction of flavors during the espresso brewing process. A fine grind increases the surface area of the coffee beans, facilitating a quicker extraction as hot water passes through the coffee under high pressure. This process is crucial for achieving the rich crema and full-bodied flavor profile characteristic of a well-pulled shot of espresso.

If the grind is too coarse, the water will flow through the coffee too quickly, resulting in under-extraction, which can lead to a weak, sour flavor. Conversely, an extra fine grind may lead to over-extraction, causing bitterness and an undesirable taste due to excessive extraction of compounds from the coffee. The fine grind strikes the right balance to ensure the best flavor and texture for espresso.