How to Use a Knock Box for Mess-Free Espresso Cleanup

Quick answer

Use a knock box to knock out spent espresso pucks directly into a container, keeping your counter and sink clean. The Graef Knock Box makes this quick and tidy.

Steps for using a knock box

1. Step 1: Position the knock box: Place the knock box on a stable, flat surface near your espresso machine. Ensure the rubber base (if present) grips the counter to prevent sliding. A wobbly knock box can cause spills—check stability before use.
2. Step 2: Remove the portafilter after brewing: After extracting your espresso, take the portafilter out of the machine. Hold it level to avoid dropping the puck prematurely. Don't let the puck dry out—knock it out while it's still warm for easier release.
3. Step 3: Knock the puck out: Firmly tap the portafilter basket against the knock bar (usually a rubber-covered edge inside the box). One sharp motion should dislodge the puck cleanly into the container. Avoid hitting too hard—you could damage the basket or scatter grounds.
4. Step 4: Empty the knock box regularly: When the container is about two-thirds full, empty the spent grounds into your compost or bin. Rinse the box occasionally to prevent odors. Overfilling can make the next knock messy—empty before it's completely full.

Product facts

• Graef Knock Box: The Graef Knock Box is designed to make espresso preparation cleaner and more efficient by providing a dedicated container for used coffee pucks. It keeps your work surfaces tidy and simplifies disposal, so you spend less time cleaning and more time enjoying your espresso.