Does temperature matter in batch brewing? — by Kas Orzol on

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The temperature has always been a major variable in extraction. It's one of the first taught to trainee baristas. It's also very ins...

LIPID RESISTANCE PART II: TESTING — by Kas Orzol on

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After coming up with a hypothesis on heat resistance, I needed to find if and how it changes. In this post, I will describe the details a...

LIPID RESISTANCE PART I: HYPOTHESIS — by Kas Orzol on

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Espresso is something you never really understand. Like almost anything in coffee, all the knowledge available merely scratches the su...

The sensory impact of colour and roasting time — by Kas Orzol on

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Colour and time are the most important roasting factors in creating coffee flavour. But there has been little research done on that. ...

Curve explained: Normal — by Kas Orzol on

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In the era of tracking software, there is a curve paradigm. "It's gotta be instagrammable". While a bit exaggerated, you ge...

Peak Water Jug Review — by Kas Orzol on

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The magnificent Peak Water Jug. Aiming to revolutionise the quality of water for home users. Starting as a Kickstarter project in 2018 it...

Roast phases explained — by Kas Orzol on

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Good roaster understands their craft beyond the curve and approaches it based on bean changes. Following the reference is simple, but ...

Roasting curve design — by Kas Orzol on

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The biggest innovation in roasting was a roast tracking software. A continuous real-time data collection and roast curves make it much ...

Create your coffee network — by Kas Orzol on

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The coffee industry has an amazing community. There are lots of driven, curious, passionate people that propel it forward. It's c...

How to grow being off work — by Kas Orzol on

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If you're reading this, the chances are you have some free time. Whether you are furloughed, in between jobs or work reduced hours...

What changes the tactile of espresso? — by Kas Orzol on

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There's little research on tactile in coffee. It's been a bit neglected compared to attributes like a flavour or taste. It's ...

Coffee Meditation — by Kas Orzol on

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This morning I was drinking coffee. It's nothing unusual. But this time was different.

I want to quit coffee — by Kas Orzol on

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Coffee is hard. It doesn't pay big money. It's not considered to be a prestigious career choice. And the path for professional de...

Podcast #4: The Tale Of Becoming a Roaster — by Kas Orzol on

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It's all true story, despite the title showing differently. This episode reflects on what I did on my way. Because even though it did...

Water filtration and its effects on coffee — by Kas Orzol on

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Water is probably the most difficult topic in coffee. You need a basic understanding of chemistry to even be able to explain how a filtr...