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Notes from the roastery: what we buy, how we roast it, and what we have learned building coffee programs on the Gulf Coast.

Tagged “acidity” · see all of Learn

Brewing

Does Water Affect How Coffee Tastes?

The same coffee tastes different on two different waters, and the number behind the difference is alkalinity, not hardness. We went to Pensacola's own utility report t...

Taste

What Is Astringency in Coffee?

The dry, puckering finish in a cup is not a taste at all. Here is the mechanism, the compounds roasting builds, and what to change at the brewer.

Taste

What Is Malic Acid in Coffee?

Malic acid is really in the cup, and measured against its own detection threshold there is usually too little of it to pick out. Where it comes from, why it got the ap...

Taste

What Is Low Acid Coffee?

Low acid coffee describes how a cup tastes, not a lower pH. Measured brewed coffee lands between pH 4.85 and 5.13, so here is what actually moves acidity.

Roasting

What Is Light Roast Coffee?

A light roast comes off the roaster just after first crack, and it is not stronger: a 2024 study measured 134 to 165 mg of caffeine at every roast level.