Daily Roast
Process guides

What washed process actually means

A plain-language description of the washed process and what it tends to bring out in the cup.

By
Daily Roast
Published
Reading time
3 min
Reviewed

Washed is one of the process terms you will often see on specialty coffee bags. It is not the only good process, and it is not automatically a sign of quality, but it is a useful reference point — so it is worth understanding what the term covers.

What happens to the coffee

After picking, the outer skin and most of the fruit are mechanically removed from the coffee cherry. The beans, still coated in a sticky mucilage layer, are fermented for a period that can range from a few hours to a couple of days. Fermentation helps break down the mucilage so it can be washed off, leaving a parchment-covered bean to dry.

What it tends to do to flavour

Washed coffees are often described as cleaner and more transparent than naturals. The fermentation step is shorter and more controlled, so the cup tends to read as the underlying coffee and where it was grown rather than the fermentation itself. The acidity usually comes through clearer, the sweetness more direct.

Washed is a useful starting point, not a better category. A well-made natural or honey can be just as compelling — it is asking a different question.

What to look for

A washed label describes one part of the coffee's journey rather than promising a particular flavour. Origin, variety, roast, water, and brewing all affect what reaches your cup. Read the process alongside those details and the roaster's tasting notes.

Public references

Sources

Public references used for the factual claims in this article.

  1. Mucilage fermentation in wet processed coffee

    International Journal of Food Microbiology · Accessed

  2. Sensory profile of coffees by processing method

    Coffee Science · Accessed

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