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What it is and what sets it apart: Looks like one side much darker/oilier. Differs from tipping (ends) and broader surface scorching.
How it is done: Check batch size → agitation/drum speed → charge temp → cup and inspect faces.
Flavours and cup benefits: Cup: localised bitterness/smoke and unevenness. Fixing it improves lot consistency.
Technical notes: Very hot drums + thin batches favour facing. QC photos train the eye.
Common mistakes: Confusing facing with even dark roast. Extending development without fixing drum mechanics.
In Cafesito
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