A well-cleaned moka makes better coffee and lasts for decades. A poorly-treated one tastes rancid and metallic. The difference comes down to a few rules.
The golden rule: no detergent (aluminum)
For an aluminum moka: hot water only, no detergent, no dishwasher. Detergent strips away the layer of oils that “seasons” the pot and leaves foreign flavors behind; the dishwasher oxidizes and darkens it. Steel moka pots can tolerate a mild detergent.
After every use
- Let it cool, then disassemble all the parts.
- Rinse the boiler, funnel filter, and collector with hot water.
- Dry everything thoroughly before reassembling or storing it: trapped moisture causes a rancid smell.
- Don’t screw it shut while it’s still damp.
Periodic checks
- Gasket: if it’s dry, cracked, or not sealing, replace it (it’s cheap). A worn gasket causes spitting and loss of pressure.
- Filter plate: check that the little holes aren’t clogged.
- Safety valve: it needs to move freely; nudge the little pin if there is one.
Descaling
Every so often, to fight limescale: run a cycle with water and vinegar (or citric acid), no coffee, then rinse thoroughly and brew one throwaway coffee.
We personally never replace our gasket — it’s rare for it to burn out. Honestly, we never descale either; we don’t think it’s necessary for us.
Frequently asked questions
Can I wash a moka with detergent? Not if it’s aluminum: hot water only. Steel can tolerate a mild detergent (we don’t do it ourselves, and never will!).
How often should I replace the gasket? When it’s dry or not sealing anymore — on average, once a year with daily use.
Can it go in the dishwasher? Not aluminum; some steel models can.