preloder

Is it Better to Sieve out Particles Smaller than 400μm?

Or is it better just to leave them in, when brewing filter coffee? Back in 2012, our very own Matt Perger won the World Brewers Cup, using a 250μm sieve to remove fines. This created a more even extraction, which allowed him to extract higher without getting dry and...

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Celebrity Deathmatch: Forchheimer vs Darcy

A science professor told BH that with espresso, “in technical terms you have Forchheimer flows instead of good old Darcy flows”. What’s that?   Keen readers of this series will remember Darcy’s law from our discussion of bed depth in espresso. Darcy’s law is an...

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Can You Please Summarise Cafe Imports’ Water Activity Paper   In our bi-weekly poll on the BH Facebook-group you asked us, "Can you please summarise this impressive research paper", which is based on a huge amount of cupping and data logging by influential green...

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How to Read Chemical Equations

Any time you’re reading about chemistry, you’re going to come across chemical formulae and equations. You might well remember these from high school chemistry, but if it feels like a distant memory then this refresher might be useful. This post goes out to the BH...

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What is the Maillard Reaction and Why is it Important?

The Maillard ‘reaction’ is actually a whole series of chemical reactions that are crucial to creating the characteristic flavours and brown colour of roasted coffee and many other foods - including chocolate, toast, and grilled steak. The reactions are named after...

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Water Science FAQ

      What is the difference (if any) between a mineral salt, a dissolved mineral, and a mineral ion? A salt, in chemistry, refers to any ionic compound (IUPAC, 1990). For example, table salt, sodium chloride, is an ionic compound composed of sodium...

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‘Seasoning’ group heads. Useful or nonsense?

‘Seasoning’ of a group head refers to the practice of making one or more ‘sink shots’ after cleaning an espresso machine - that is, shots that are thrown away with no attempt to taste them. Advocates of seasoning claim that the first shots have an unpleasant metallic...

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The Great Distribution Debate: Results

Tldr: we found a statistical difference between using the OCD and finger distribution, and between palm tapping and finger distribution — but no significant difference between palm tapping and OCD. But we’re going to continue researching and have some cool ideas for the next experiment.

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2017 Predictions and Promises Report

At the beginning of 2017 I posted my predictions and promises for the year. Here’s my report on how they stood up over the 12 months (ratings out of 10).

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2018 Promises

Here’s what I’m promising we’ll knock out of the park for 2018.

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August Survey Results 2017

In August we posted a survey to the Barista Hustle Facebook group. Along with our community moderators, we were thinking how to be more active and intentional about fostering a community environment, one which every single human feels safe and comfortable participating in.

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Keep it Simple

Coffee brewers— both professional and enthusiast— love to make things complicated. Complex multi-step brew recipes and brewing devices with some unique feature have become standard. Fancy new features on espresso or brewing machines are demanded without any evidence of their necessity (hello pressure profiling).

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Barista Hustle Community Guidelines

We aim to engage in meaningful, professional, friendly discussions surrounding coffee. A fundamental goal of Barista Hustle is to help the world make better coffee — and there is a lot that falls under that umbrella. So we want to talk about the deep and meaningful, the scientific and technical, the broader industry-wide topics, and the smaller individual level aspects. We want to talk about all the important stuff.

To enable these conversations to happen in a positive, respectful, and equitable manner, we have a few guidelines.

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Coffee is the leased of your worries …

While extraction theory, EK alignment, and particle size distribution are all worthy topics of discussion here at Barista Hustle, these all mean nothing if you’ve not got a shop to experiment in. Jared Lawler gives us a fascinating view on the business side of coffee, with a solid list of points to consider.

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DIY Water Recipes: The world in two bottles

Our Barista Hustle water recipe was and is a useful starting point for building water, giving you a good chance of success when brewing up coffee at home. For those willing to dive a little deeper, we can get far more specific.

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Immersion vs Drip Coffee Brewers

There are two main types of coffee brewer – drip, and immersion. They each make coffee slightly differently, but one of them is far more efficient. Here’s why!

 

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