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Behind the Roast with Willem Boot

In our Behind the Roast video’s, Giesen ambassador Willem Boot shares his knowledge and roasting experience while roasting coffee. Learn all about a specific type of coffee, the Giesen roaster controls, material types, coffee tools and much more! So grab a cup of coffee, ask your questions, and learn with Willem!

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Behind the Roast episodes

Download the roasting milestones exercise

Free sheet to monitor your roasts. Willem talks about the sheet in the episode about roasting an blending for espresso. 

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Ask Willem

Send in your question

Ask away and your questions will be answered by Willem in the next Q&A at the end of each episode.

All Willem Boot blogs

Blogs: Willem Boot

Loading beans in a Giesen W6E
Willem Boot

Identifying and Avoiding Common Roasting Defects

Even the most skilled roasters encounter challenges along the way, resulting in what are known as coffee roasting defects. Let’s explore some common coffee roasting defects, their causes, and how they can be identified and prevented.

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Willem Boot

Exclusive Look: Sampling the Finest Panama Coffee of the Season!

In this article, Willem Boot gives us an update on the new harvest from the farms in Panama, specifically Finca La Cabra and Finca La Mula. The farms are almost done with the harvest, but still have microlots resting on the drying beds or in the dark room. It’s crucial that we take our time and slowly dry the beans with care for over 20 days.

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Upcoming subjects

Here’s a sneak peak of the topics that Willem will cover in this new series.


Roasting and blending for espresso - ONLINE


Walking the curve; from Maillard to Caramelization to Roast Development - ONLINE


Roasting strategies to optimize decaf coffees -ONLINE


Special: Roasting dialogues with Jaime Duque -ONLINE


Pressure profiling with Giesen roasting machines -ONLINE


Roasting strategies for the best possible consistency - ONLINE


Optimizing roasting profiles with the Giesen Roast Profiler - ONLINE


Selecting and roasting coffee components for filter - ONLINE


Special: The joy of coffee with Aharon Vaknin - ONLINE


Roasting strategies to modulate the flavor profile of special process coffees


Sample roasting strategies with WPG1


Special: Roasting dialogues