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PXL Roasters
  • History
  • Viewpoints

    Texts by the author

    Six articles by Marco De Sousa Rosa, published here as they were written. They are a practitioner's points of view, signed and dated; they do not replace the sourced plates, they say where the person who built them is speaking from.

    Stacked jute bags, the one in the foreground marked “Produce of Ethiopia, natural Yirgacheffe Gr.1 Gedeb,” with lot and certificate numbers.

    Marco De Sousa Rosa · Article, 2026

    What goes unsaid about the price of specialty coffee

    For a long time, I believed that the price of specialty coffee was a matter of quality. The better it tastes, the higher the price, the more flows back to the producer. A kind of natural justice…

    Read the text · 3,010 words

    A man seen from behind at the cluttered counter of a neighborhood café, surrounded by sugar and coffee tins, mismatched hanging cups and stacked paper cups

    Marco De Sousa Rosa · Article, 2026

    The coffee we think we already know

    Habits, cultures and the transmission of taste

    There are products we discover, and others we think we already know.

    Read the text · 7,075 words

    Under the brass drop hatch of a Probat roaster, the still-hot beans spread in the cooling tray where a sampling scoop rests.

    Marco De Sousa Rosa · Article, 2026

    Growing without burning

    What really changes when the scale changes

    Growing without burning: what really changes when the scale changes, in either direction

    Read the text · 7,412 words

    A white, clean-lined coffee counter seen from the dining room, with a machine, a grinder, Chemex filters and a stack of paper cups under a lit sign

    Marco De Sousa Rosa · Article, 2026

    The counter is a stage

    Why automation works in the kitchen and stalls at the bar

    There is a conversation I have several times a year, and it almost always unfolds in the same order.

    Read the text · 4,222 words

    Marco De Sousa Rosa · Article, 2026

    A cup defect is rarely decided in the cup

    From the resting of the cherry in Nicaragua to the crema of an automatic machine

    Two years ago, we had a problem at each end of the chain, and no one saw that it was the same one.

    Read the text · 1,024 words

    Marco De Sousa Rosa · Article, 2026

    Seven ancestors, and what we conclude from them too quickly

    What Brazil's genetic base says, and what it does not say

    There is a scene I live through several times a year, and it always begins with a sheet of paper.

    Read the text · 4,262 words

    © 2026 Marco De Sousa Rosa · PXL RoastersTexts under CC BY-NC-SA 4.0 · tools: all rights reserved · images: see the provenanceHome · Colophon · Site map