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That can be done temporarily, but performance and taste will deteriorate. In the longer term, this can cause damage to the machine.

Always rinse the machine thoroughly with clean water. This prevents any descaler residue from ending up in your coffee.

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 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. Let another full tank of clean water run through to remove any residue.

You can tell by a longer turnaround 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 been kept 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 the coffee keeps for less time.

The type of coffee has hardly any influence 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, part of the ingredients may be certified. This is usually stated on the packaging or in the explanation accompanying the certification 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 attention to nature and people. In this way, 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 not recirculated.