FAQ Coffee Knowledge & Technology

Important knowledge and background information on coffee and machine technology


Just like wine or olive oil, there are a wide variety of coffee qualities when it comes to Arabica and Robusta beans. The location, the growing conditions and the care with which a coffee is grown, harvested, selected, dried and roasted determines whether it goes from "well, it wakes you up" to "wow, what a treat" - although we at HOC definitely prefer the great taste experience...

In this FAQ coffee blog, we would like to look at the coffee production process, the question of what are the best professional portafilter machines, which grinding level of a coffee grinder is the right one, why is cleaning a brewing group so important, what technical differences are there, which barista accessories are necessary and how do you prepare an optimal coffee.

All Barista-Tipps Der richtige Brühdruck E61-Brühgruppe Edelstahlboiler Enkalken Espresso Generalüberholung Highend Espressomühle Kaffee richtig mahlen Kaffeebohnen Kaffeemaschine entkalken Kaffeemühle Kaffeemühle für Röster Kaffeemühle richtig einstellen Kaffeezubereitung Kalk Kessel einer Kaffeemaschine Kupferboiler Kupferkessel vs. Edelstahlkessel Mahlgrad Kaffee einstellen Offset Osmose Profi-Kaffeemaschine Reparatur Sanremo Coffeemachines Sanremo Espressomühle Sanremo X-One Siebträger Siebträgermaschine Single Origin Tampen Wartung X-One Grinder
Generalüberholung - Ein neues Leben für Deine Siebträgermaschine

General overhaul - A new life for your portafilter machine

What should you do if the portafilter machine no longer works properly? Buying a new one can be expensive. Here's an insight!
Was darf es denn sein - Kupfer- oder Edelstahlkessel?

What would you like – a copper or stainless steel kettle?

Copper boiler vs. stainless steel boiler: portafilter - what's important? Find out here the special features of copper or stainless steel boilers and our conclusion.
Warum ist das richtige Wasser beim Kaffee so wichtig?

Why is the right water so important for coffee?

Disturbing substances in the water can affect the taste, consistency and appearance of your coffee or tea.
Reinigung der Siebträgermaschine - Arbeit die sich lohnt

Cleaning the portafilter machine - work that is worth it

Find out here why daily cleaning of a portafilter machine is not just a question of hygiene.