Brew School

Find out how beer is made & try the basics brewers rely on every day, from starch conversion and water chemistry to pH and gravity readings.

Ever wondered how grain, hops, water and yeast become a pint of beer? Join Derek McKenna of Bréifne Gael Brewing for a relaxed, hands-on introduction to the science behind brewing.

In this special Science Festival event at the Bréifne Gael Brew School, Derek will take you through the brewing process from start to finish. At each stage he'll explain what's happening and why it matters. Along the way you'll learn the everyday science brewers rely on. You'll find out why water chemistry significantly affects a beer's taste, and how and why brewers check and adjust pH.

You'll also see how gravity readings with a hydrometer show how much sugar is in the beer and how fermentation is progressing. And you'll learn why keeping a close eye on temperature makes all the difference.

Derek's Ór Dubh Irish Stout recently won Silver at Blas na hÉireann 2026, so you'll be learning from someone who has put these basics to the test.

You don't need a science background, just curiosity. Whether you're a science fan, a home brewer or just curious about how beer is made, this is a friendly, easy introduction to an age-old craft.