What is raisin tanning? Costa Rican Coffee processing Fine Coffee
Professional coffee knowledge exchange more coffee bean information please follow the coffee workshop (Wechat official account cafe_style)
There is a particularly eye-catching "raisin sun" in Costa Rican coffee treatment.
What is the raisin sun?
The first step: pick the fruit and arrive at the treatment plant at noon to wash it, then dry it on an African rack for 5 days and turn it every two hours.
Step 2: dry the cement floor in the shade shed for 15 days and spread it into 10--15cm. At this time, after drying every two hours during the day, it is covered with plastic sheeting and semi-isolated from the air.
Let it release water vapor inside the plastic sheet, then open the plastic sheet to get in close contact with the air for two hours, and then cover it again and again.
Step 3: pile up a hill at night and cover it with black plastic sheeting. Continue to be stuffy up and ferment hard, sweetness rises, wine taste rises, all come!
Step 4: when the moisture content drops to 11%, put the bag into the warehouse without sealing, and the moisture content will naturally drop to 10.5% during this period.
The whole process uses shade drying for a long time, and then covers the surface like raisins with sticky ingredients.
END
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