Comparison of the difference between wet planing and washing by Manning treatment in Sumatra, Indonesia

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The coffee we usually drink is not a coffee bean growing up, but a round fruit. Remove the outer skin and pulp through various treatment methods to get the innermost coffee seed, which becomes the coffee we usually drink after baking.

The common coffee treatment methods are mainly divided into: sun method, water washing method, and honey treatment between sun washing, wet planing, half-washing and half-sun.

At present, the more common method of raw bean treatment, many boutique coffee are treated with water washing.

First, select beans

If you soak the harvested coffee fruit in the sink for 24 hours, the ripe fruit will sink, and the unripe or overripe one will float up and can be removed.

Second, remove the pulp.

Use a machine to remove the peel and pulp, leaving only coffee beans wrapped in endocarp. At this time, there is a layer of mucous membrane on the outside of the beans, and the process of washing is to clean the mucous membrane.

3. Fermentation

The mucosal adhesion is very strong and must be placed in the tank for about 18-36 hours to ferment and decompose the mucous membrane.

4. Washing

Put the fermented beans in the washing pool and pass them back and forth, using the force of friction and running water to wash the coffee beans until smooth and clean.

5. Drying

After washing, the coffee beans are still wrapped in the pericarp with a moisture content of 50%. They must be dried to reduce the moisture content to 12%, otherwise they will continue to ferment and become moldy and rotten.

6. Shelling

Peel the dried beans and remove the endocarp and silver film.

The tradition of using wet planing in Indonesia starts with the local weather. Humidity in Indonesia is between 7090% and 90% throughout the year, typhoons continue, and in some areas, annual rainfall can even reach as much as 2000mm. You know, raw beans are most afraid of Rain Water. How did Indonesia overcome such bad weather conditions to produce rich and mellow Mantenin coffee? That is to rely on wet planing.

In tropical climates, coffee takes an average of 2 to 3 weeks to dry. In such a humid climate in Indonesia, dry coffee has become a big problem. Coffee must take longer to dry, during which time the coffee still maintains a high humidity, making it easier for bacteria to soak into raw coffee beans.

In the process of ordinary washing, the drying process is carried out with parchment to protect raw beans from external damage to a certain extent. However, we can note that the wet planing removes the parchment for the final step of drying, so that the sun shines directly on the surface of the raw beans, causing the coffee beans to dry quickly, 2 or 3 times faster than the washing treatment.