Making an Espresso Coffee Thermal Image

30 Dec


Making a good espresso coffee is a kind of art for quite a lot of people, but even for these that just want to be able to drink good espresso coffee there are some simple rules that can help you get the best results. One of the important things when making an espresso coffee is the temperature of the water that goes through the grinded coffee beans to make your drink. It is recommended that the temperature of the water during the coffee extraction is between 85 and 95 degrees and what ends up in your cup and an espresso coffee will be with a lower temperature. We did an experiment with a Philips Saeco Xsmall espresso machine making a short espresso and measured the temperature of the resulting coffee in the cup using a thermal imaging camera. The temperature of the coffee in the cup was about 67 degrees Celsius, a temperature that is Ok for serving the coffee as most people prefer to have their coffee served at about 70 to 80 degrees Celsius, though some prefer lower temperatures. So it seems that this espresso machine is making the coffee ready for serving as soon as it is in the cup, however we suspect that the temperature of the water passing through the grinded coffee may be a bit lower than the optimal one we already mentioned above.

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