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This can be done with vinegar or citric acid, but this is not recommended. These agents are more aggressive and can damage parts of the machine, shortening its lifespan.

Descaling a Senseo with vinegar is possible, but not ideal. Vinegar can leave a strong smell and taste behind and is less gentle on the internal components than a dedicated descaling agent.

If the light stays on, the machine has usually not been rinsed properly. Run another full tank of clean water through to remove any residue.

You can tell by a longer brew time, less hot coffee, or a change in taste. These are signs that there is limescale in the machine.

Coffee can become more bitter when it stays warm for a long time. Due to the heat, flavours continue to develop, which means that especially darker coffees can taste stronger and more bitter after a few hours.

Coffee is usually still safe to drink after 8 to 12 hours as long as it has stayed properly hot and no milk or sugar has been added. The taste may be less fresh than straight after brewing.

Coffee with milk cools down faster than black coffee. Milk lowers the temperature and also means that the coffee does not keep for as long.

The type of coffee has hardly any effect on the heat. The thermos flask and how it is used almost entirely determine how long the coffee stays warm.

The Rainforest Alliance certification mark contributes to more sustainable agriculture by setting requirements for nature management, biodiversity and working conditions. It focuses on long-term improvement rather than quick guarantees.

Not always. For composite products, some of the ingredients may be certified. This is usually stated on the packaging or in the explanation accompanying the quality mark.

The certification encourages better incomes through higher yields and more efficient farming, but does not guarantee a fixed minimum price. The aim is mainly to make farmers stronger and more resilient.

It means that you choose coffee that has been produced with more consideration for nature and people. In doing so, you contribute to more sustainable coffee cultivation, without this having to change anything about your daily coffee moment.

A Bialetti is often called a percolator, but technically it is a moka pot. The coffee is brewed in one go and is not recirculated.

Only Bialetti stainless steel percolators are suitable for induction. Aluminium models only work on gas, electric or ceramic.

Fill the filter completely with ground coffee without tamping it down. The amount depends on the size of your Bialetti.