Kuppersbusch USA EKV 6600.0 User Manual download pdf (Page 9)

7.1.6 Keeping coffee hot

Coffee should not be kept hot on the hotplate of coffee machines or on a warmer. The reason: the

heat will cause the coffee to re-draw. This means that water will evaporate, resulting in the

evaporation of the fine coffee aroma. Coffee will not only lose its flavour; it will also taste bitter very

quickly.

7.1.7 Where can I get the freshest coffee?

Coffee bought at the small roasteries found in almost any larger town is freshest. These roasteries

generally sell high-quality beans which are roasted gently for a long time.

7.1.8 What is the difference between coffee and espresso?

Espresso and coffee are made from the same bean but the roasting times are different. Espresso is

roasted for longer than coffee. The result: espresso is tastier and has a stronger coffee flavour with a

lower acid content. Classic espresso generally comprises a mixture of Arabica and Robusta beans.

However, what distinguishes espresso and coffee most is the way they are made. Espresso is not

made in filter paper; it is made in a metal sieve. Within 10 to 12 seconds for automatic coffee

machines and within 25 to 35 seconds for espresso machines used on a cooker hotplate, water

heated up to 95°C is forced through this sieve. This means that the espresso powder only makes brief

contact with the hot water. All of the flavouring but only a little caffeine and few bitter substances

are dissolved in the powder. This is why an espresso, which is considered to be a black, particularly

strong beverage, only has half as much caffeine as a cup of coffee.

Training manual Section 7 – Page 9

Coffee machines

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Kuppersbusch USA EKV 6600.0 User Manual Page 9