Coffee Knowledge

Three piles of coffee beans showing light, medium and dark roast levels side by side

Light, medium or dark roast: what coffee roast levels really mean

Light, medium and dark roast change how coffee tastes, not how strong it is. Here is what each roast level does to fl...

May 21, 2026

Brown coffee bag with one-way valve bag and fresh roasted coffee beans for coffee bean degassing

Coffee Bean Degassing: Why Day One After Roast Is the Worst to Brew

Fresh roasted coffee needs time to release CO2 before it brews well. A practical guide to degassing windows for espre...

May 19, 2026

A Q-grader coffee professional evaluating coffee samples during a blind cupping session — specialty coffee evaluation and coffee quality assessment.

Q-grader coffee explained — how professionals are certified to taste

Fewer than half of candidates pass the Q-grader certification on the first attempt. Here is what it takes.

May 07, 2026

Hot water being poured over coffee grounds causing coffee blooming — the CO2 coffee release during pre-wetting when brewing specialty coffee.

Coffee blooming explained — why pre-wetting makes a difference

If your coffee grounds do not bubble when water hits them, your beans are telling you something.

May 03, 2026

An open bag of coffee beans beside a sealed airtight container — the impact of coffee oxidation on storing coffee beans and specialty coffee taste.

Coffee oxidation explained — why beans go stale so fast

Freshly roasted coffee is not at its best on day one — and it is already declining by week four.

April 29, 2026

Coffee cupping explained — how professionals taste coffee

The slurp is not rude — it is the most precise way to taste coffee that exists.

April 25, 2026

A burr grinder grinding coffee beans to a consistent coffee grind size for optimal coffee extraction and coffee flavour.

Coffee grind size explained — why it determines everything

Same beans, different grind size — completely different result in your cup.

April 21, 2026

Someone checking water temperature coffee brewing with a thermometer over a pourover — coffee flavour and single origin coffee.

Water temperature coffee — how it shapes your cup

Boiling water is the most common brewing mistake — and the easiest one to fix.

April 20, 2026

Three coffee roast levels from light to dark in small bowls show how coffee roasting changes the color, flavor and aroma of the bean.

Coffee roast levels explained: light, medium or dark roast

Dark roast does not have more caffeine. Light roast does not taste sour. Time to clear up the biggest coffee roasting...

April 18, 2026

Coffee tasting notes explained: how to read a flavor profile

Every specialty coffee bag has tasting notes. But what do they actually mean and how do you find them yourself?

April 12, 2026

A steaming cup of coffee on a wooden table illustrates what is caffeine and the caffeine effect as a daily stimulant.

What is caffeine and how does it actually work in your body

Caffeine does not give you energy. It just blocks the signal that tells you you are tired.

April 07, 2026

A half-empty coffee cup next to an alarm clock showing the connection between coffee and sleep and caffeine sleep timing.

How coffee affects sleep and when to drink your last cup

Your afternoon coffee is still active in your body when you go to sleep. Here is what that means.

April 05, 2026