Tamper is a tool used to compress or press an ingredient into a defined space. In coffee preparation, an espresso tamper compresses ground coffee evenly in the portafilter basket to create a level, consistent coffee bed for extraction. The term is also used for tools that press ingredients into moulds or containers in other kitchen applications.
After grinding coffee into the portafilter basket, the barista distributes the grounds and presses them with a tamper. The aim is to create a level, evenly compressed bed so water flows through the coffee consistently. The tamper should fit the basket diameter and be held square to the surface.
Example: a barista distributes freshly ground espresso in the portafilter, levels the surface and tamps evenly before locking the portafilter into the machine.
Distribution spreads coffee grounds evenly in the basket. Tamping compresses the grounds into a level bed. Both influence extraction, but they are separate steps.
Chef’s note: keep the tamper clean and dry, and use a size that fits the basket correctly. Consistency and level tamping are more important than applying excessive force.
This term is one of hundreds covered in depth across OCS courses, learning paths, and 1-on-1 coaching with Chef Eric.
