Steffen Schwarz

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Green Coffee Defects: What the Bean Reveals

Author: Dr. Steffen Schwarz Date: May 21, 2026 Executive Summary: A green coffee defect is not an object but a trace. It is the visible end of an invisible process that may begin with overripe cherries, drought stress, insect damage, poor drying, or inadequate storage. Defects have families: extrinsic (stones, sticks, husks) cause physical damage</p>

5 Min Read

2026-05-21

Reflections

Invisible Gravity in Coffee

By Dr. Steffen Schwarz If you stand at the edge of a coffee farm at dawn, the industry looks almost impossibly fragmented. It is a mosaic of small plots and a patchwork of varieties where thousands of decisions are made by hand: when to prune, when to fertilize, and when to pick. Multiply that landscape</p>

4 Min Read

2026-02-14