Macro Grinder Adjustment

Macro adjustment means making a relatively large grind-setting change to move quickly between broad brewing ranges. It is the opposite of the tiny micro-adjustments used to fine-tune an espresso shot.

Where macro adjustment is useful

A multipurpose grinder may need a major move when switching from espresso to pour-over, batch brew, French press, or cold brew. Some grinders use separate macro and micro controls; others use one stepless collar where the user simply makes a larger rotation.

Why espresso needs smaller changes

Espresso is highly sensitive to small changes in burr spacing because the compact puck creates substantial hydraulic resistance. Once the grinder is in the correct general range, switch to fine adjustments and evaluate dose, yield, time, and taste.

Purge after a large change

Retained grounds from the previous setting can mix with the next dose and make the first shot or brew misleading. The amount of purge needed depends on grinder retention and whether the burrs are moved finer or coarser.

Avoid forcing the burrs finer

Some grinders should be running when making a large adjustment finer so beans are not trapped between stationary burrs. Follow the grinder manufacturer’s instructions, especially when moving toward the espresso range.

Browse home coffee grinders or commercial grinders, and see the Coffee Glossary for related grinder terms.