Coffee treatment what is the difference between sun treatment and water washing treatment

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Sun treatment

The oldest way to treat raw coffee beans is to remove the peel after sun-drying the ripe coffee fruit.

In the real sense, there are only three parts. The first step is to pick out the unripe beans after picking the coffee beans.

The second step is to put it directly in the open air to accept the explosion of the sun, and then put it in a bucket and let it sit for one to two months to make the coffee bean flavor more complete and stable.

The third part is peeled and shelled by a sheller, and finally put into a sack.

Sun-treated raw beans usually add some completely new flavors, such as the common floral and fruity flavor of sun-dried beans, but in many cases, sun-dried beans are also accompanied by some unpleasant smells, such as soil, overfermentation and other slightly wild flavors.

Washing treatment method

Washing removes the sticky pulp from the coffee beans before drying, which ensures that it does not over-ferment or produce more mold when it is dried, and the cost of washing is higher than that of tanning.

The first step is to pour the coffee into the sink after picking, the ripe fruit will sink and the unripe fruit will float on the water.

The second step is to remove the peel from the coffee pulp with a fruit removal machine, then put the coffee beans in the sink and ferment in water to remove pectin and pulp.

In the third step, after the fermentation is completed, the shelled coffee beans are washed with clean water to remove surface residues.

The fourth step is to put the shelled coffee in the open air, then put it in a bucket to make the coffee more stable, and finally remove the shell coffee skin and put it into a sack.

During the cup test, it will be found that the acid quality of washed coffee beans is more obvious with that of fruit, because the contents of citric acid and malic acid are higher in water washing treatment, while these organic acids are lower in sun treatment. I personally think the acid is more active and cleaner.