Introduction to the treatment of raw coffee beans-half-sun method
In order to improve the quality of coffee in Brazil, the Brazilian government has invented half-sun method and vigorously promoted it. At present, almost all high-quality coffee beans in Brazil use half-sun method to treat raw beans. It can be said that half-sun method has successfully improved the overall quality of Brazilian coffee.
The pre-treatment method of half-sun method is almost the same as that of water washing.
Choose beans: first put the coffee fruit into a large water tank, remove the floating fruit, and then put the sunken fruit into the pulp sieving machine to remove the pulp. To better remove the immature fruit, it is more important to let the coffee beans dry in the sun no longer with pulp, but only wrapped in a layer of pectin, which is more helpful to control the subsequent fermentation process.
Drying: move the beans to the bean drying farm to dry, about 3 days to achieve a certain degree of dryness
Drying: further drying in a dryer until the water content of the beans reaches 10.5% to 12%.
Polishing: the final polishing process is carried out before the beans are bagged and exported.
Because the half-sun method has certain requirements for climate and technology, it can only be widely used in Brazil. Through half-sun treatment, it not only retains the unique sweet taste of the sun method, but also avoids the mildew taste of the sun method, shaping the unique flavor of Brazilian coffee.
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Introduction to the treatment of raw coffee beans-tanning method
Sun treatment will first identify sunken beans in the sink, that is, ripe or half-ripe beans are spread in the drying farm for natural drying. The specific time depends on the local climatic conditions, which usually takes two to four weeks. When the moisture of the coffee bean is reduced to 12%, then use a sheller to grind off the hard pulp and silver skin. The requirement of the sun treatment on the climate is very high.
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Introduction to the treatment of raw coffee beans-semi-washing method
It is a relatively new and rare method. This method is also suitable for processing local coffee only in specific areas of some countries where there is a long drying period in the climate. The coffee produced by this method is sticky, and the mucus is not removed with fermentation in the tank. Therefore, the coffee produced by this semi-wet treatment contains moisture treatment.
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