How to clean a cafetière and its metal plunger

A cafetière is easy to brew with and easy to neglect. A quick rinse of the glass leaves coffee grounds in the filter stack, where trapped oils can make a later cup taste stale. The fix is not a special brew recipe; it is separating the food-contact parts often enough to clean them properly.

Right after brewing

Pour out the coffee you intend to drink rather than letting it sit on the grounds. Allow the beaker and plunger to cool. Tip the grounds into a suitable food-waste or general-waste route according to your local council; avoid packing a large mass down the sink. If the final grounds stick, use a little water to loosen them, then collect them rather than flushing a dense slurry into the drain.

Wash the beaker with warm water and a soft sponge or brush. Avoid sudden temperature shocks to glass, and inspect for chips or hairline cracks. Wash the plunger surfaces, especially the lower mesh, with the method the manufacturer permits. Rinse well and leave components to dry where air can reach them. A damp reassembled press can retain odour. The coffee-oil cleaning guide explains why a clear rinse is not always sufficient.

Deeper clean: take apart the plunger

Bodum UK's brew guide recommends periodically dismantling the plunger and cleaning each piece separately. On a typical screw-together stack, note or photograph the order of the spiral plate, mesh and cross plate before taking it apart. Unscrew by hand rather than bending the mesh. Brush both faces and the rim, where fine grounds collect. Rinse every part and dry thoroughly before assembling in the original order. If your model is not designed for user disassembly, follow its manual instead of forcing it.

Do not stretch a mesh disc to make a poor fit seem better. A bent support plate, missing spring edge or torn screen can let grounds through and make plunging feel wrong. For a known model, a correct replacement part may be more sensible than a whole new press. See our best cafetières comparison only if the vessel itself is damaged or the size no longer works.

What about the dishwasher?

Do not assume every cafetière and every component share one dishwasher rule. Glass, frames, handles, decorative finishes and plunger parts differ. Check the exact model instructions. Even where a beaker is dishwasher-safe, hand-cleaning the mesh stack may be needed to dislodge trapped grounds. Avoid abrasive pads on glass or plated metal.

If the cafetière smells stale

Check the filter stack first, then the beaker rim, lid and any handle seams that contact coffee. Clean as the maker permits, rinse thoroughly and let it air-dry fully. If the smell remains after a proper clean, inspect old mesh or seals for trapped residue. A coffee-cleaning chemical should only be used if approved for the materials and then rinsed completely; it is not a reason to pour espresso-machine descaler into the press.

Frequently asked questions

Do I need to dismantle the plunger every day?

A thorough rinse after each use is sensible; periodically dismantle it to remove residue between layers. If you use very oily beans or notice stale odour, do it sooner.

Can I wash the beaker while it is still hot?

Let it cool first. Handling hot glass and exposing it to an abrupt water-temperature change increase the risk of damage or injury.

Why are there more grounds in my cup?

Some sediment is normal for a metal-filter press, but a torn mesh, misordered stack, wrong grind or forceful plunge can worsen it. Our cafetière method covers brew variables.