After each use: throw away grounds, rinse carafe and plunger with warm water. Once a week: completely disassemble the filter system and clean with dish soap. Rancid coffee oils ruin even fresh coffee.

How to clean a French press properly?

After each use: throw away grounds, rinse carafe and plunger with warm water. Once a week: completely disassemble the filter system and clean with dish soap. Rancid coffee oils ruin even fresh coffee.

Why that is

The French press has a problem that paper filter methods do not: coffee oils stick to the metal mesh, the glass wall, and the rubber gaskets. These oils oxidize over time and turn rancid. Rancid coffee oils impart a musty, stale flavor that ruins even the best fresh beans. If you just quickly rinse the press in the morning after brewing and set it aside, you will build up a layer of rancid oils over weeks.

Daily cleaning (after each use):

1. Discard coffee grounds into the compost bin. Don’t wash them down the drain — coffee grounds clog pipes.
2. Rinse the carafe with warm water. The glass wall should feel clean, not greasy.
3. Rinse the plunger under running water and remove any coarse residue from the mesh.
4. Let everything air dry completely separated. A closed, damp French press is a paradise for mold.

Weekly deep cleaning:

1. Take the filter system completely apart — on most French press models, the mesh unscrews from the plunger rod. It consists of 2–3 parts: a cross plate, a mesh screen, and a spiral plate/gasket.
2. Clean all parts with warm water and a drop of mild dish soap. An old toothbrush helps clean the mesh.
3. Rinse thoroughly so no soap residue is left behind.
4. Let it dry completely, then reassemble.

Tip for stubborn residue: Soak the mesh overnight in hot water with a drop of dish soap. The next morning, even baked-on coffee oils will wipe away easily.

Avoid breaking the glass: Do not rinse the glass carafe with cold water while it’s still hot — thermal shock can shatter the glass. Let it cool down first or use lukewarm water.

In practice at Green Wall Coffee

At Sophienstraße 27, we thoroughly clean all brewing equipment after every use — it’s a basic requirement for good coffee. My advice: If your coffee suddenly tastes musty or different than usual, it’s often not the bean’s fault, but the brewer’s. A proper deep clean solves the problem immediately.

Related questions

• How do I brew French press coffee correctly?
• Can I use the French press for tea too?
• How do I clean my coffee grinder?

Come visit us at Sophienstraße 27 — Mon–Fri 8am–5pm, Sat 10am–5pm.