<human>:  How do I descale my espresso machine?
<bot>: To descale your espresso machine, you will need to turn it off and unplug it from the power source. Then, fill the tank with a mixture of water and white vinegar, approximately equal parts. Run the machine several times until you have emptied the tank. After that, fill the tank with just water and allow the water to run through the machine for several cycles until it runs clear. Then, allow the machine to cool down and rinse it once again with just water. Finally, plug the machine back into the power source and switch it on.