Coffee Som

Your coffee sommelier.

Knows the time, the weather, your mood. Picks the bean, the brew, the food, the music. Adapts to you.

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The Daily Pour.

What's in the cup today at Buna Science.

Coffee cupping session

March 31, 2026

Cupping the new Guji lot

Peach, lavender, and something we can't quite name yet. The NIR spectra show an unusual peak at 1180nm — more lipid development than typical Guji naturals.

Ethiopian coffee highlands

March 28, 2026

Why Ethiopian naturals taste like blueberries

It's not a flavor added during roasting. The mucilage ferments on the seed during natural processing, and Harrar's wild varieties have a genetic predisposition to produce fruity esters.

Coffee roasting

March 25, 2026

The forbidden profile

What happens when you max radiation heat while increasing airflow? On a drum roaster, garbage. On NIR, white florals and toffee. We ran the numbers.