26.02.2026
7 min.

The art of coffee roasting

Arabica, Robusta und das perfekte Aroma entdecken

Coffee is much more than just a drink. For coffee shops, roasting plants, hotels and cafés, it is a central experience. It is only through roasting that each coffee bean unfolds its full potential. The right roast determines whether coffee tastes light, fine, fruity or strong - and whether it is a convincing espresso, café crème or cold brew.

Coffee roasting is a combination of craftsmanship, science and experience - perfect know-how for anyone who wants to offer good, high-quality coffee.

Green coffee: Arabica or Robusta?

What are the differences?

Arabica coffee - Coffea Arabica
The Arabica plant (Coffea Arabica) produces Arabica beans, which are particularly appreciated for their fine and complex aromas. Arabica coffee often tastes fruity, floral or slightly chocolaty and nutty, sometimes with notes of dark chocolate. It is ideal for high-quality filter coffees, café crème or elegant espressos. Thanks to its lower caffeine content, Arabica coffee is often associated with a good night's sleep.

Robusta coffee - Coffea canephora
Robusta beans come from Coffea canephora and are more resistant to cultivation.Robusta coffee is stronger, more bitter and contains significantly more caffeine. Robusta provides a dense, stable crema and an intense flavor, especially in espresso. Robusta is ideal for espresso blends, milk drinks or as a base for strong blends. Whether Arabica, Robusta or a blend - the decisive factor is the desired style and target group.

Mikafi Sustainability Thermoplan.ch

Roasting: the key to taste

During coffee roasting, the beans are heated at high temperatures. Complex chemical processes take place, above all the Maillard reaction, which is responsible for the color, aroma and taste.

The results vary greatly depending on the degree of roasting:

  • Light roast: fruity, light, lively
  • Medium roast: balanced, round, versatile
  • Dark roast: intense, strong, low acidity

Whether roasted coffee later tastes mild or strong depends directly on time, temperature and experience.

Second Crack & Timing: When is coffee perfectly roasted?

During roasting, the structure and color of the bean change. During the so-called second crack, cell structures burst open - a crucial moment. If it is stopped too early, the coffee tastes unbalanced; if it is roasted for too long, bitter substances dominate.

Perfectly roasted coffee combines aroma, taste and body to create a harmonious overall impression.

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Why high-quality roasted coffee makes all the difference

Those who roast coffee themselves or understand the processes offer more than just a drink. Freshly roasted, transparently produced and refined with know-how, coffee becomes a genuine premium product - ideal for on-site sales, the online store or exclusive private labels.

The focus is on quality, trust and experience - aspects that customers particularly value today.

In-house roasting sounds exciting? Now easily realized with Mikafi roasters!

This is where the Mikafi roaster from Thermoplan comes into play - the compact table-top roaster developed for coffee shops, roasting plants, offices and hotels. With Mikafi, coffee roasting becomes an eye-catcher right on site: guests can experience and smell the entire process live in a transparent glass drum, from the green bean to the roasted coffee. The result is a bean-to-cup experience that combines quality and enjoyment.

Mikafi combines technological precision with intuitive operation and is suitable for all levels of experience - from beginners to professionals. Whether via touch display directly on the device or Mikafi Portal, which enables cloud-based control, remote access and management of roasting profiles: the roaster makes it easy to create your own roasting profiles and thus influence the taste in a targeted manner.

With the Mikafi roaster you benefit from:

  • Visible roasting process in front of guests, combining experience and quality
  • Control over individual roast levels - from light to medium to darker roasts
  • Easy to get started thanks to predefined recipes and touch operation
  • Manual adjustment option for experienced roasters
  • Efficient process with lower emissions and energy consumption than traditional roasting machines
  • Additional sales opportunities through the sale of freshly roasted coffee beans or signature blends directly in the café or online store

Technically, Mikafi impresses with intuitive operation via touch display and automatic bean cooling directly after roasting. The transparent glass drum combines design and functionality so that roasting becomes an experience for all the senses - and guests can see exactly how green beans are turned into high-quality coffee.

Further information and details about Mikafi can be found here.

Conclusion: Coffee becomes special when knowledge, technology and experience come together

Whether Arabica or Robusta, light or dark roasted - excellent coffee is created where an understanding of the product meets precise technology. Those who master the roasting process and make it visible create trust, differentiation and a genuine taste experience.

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