How to select high quality raw coffee beans

Professional barista communication, please pay attention to coffee workshop (Weixin Official Accounts cafe_style)

To brew a good cup of coffee, we must start from the selection of coffee beans of consistent quality. In order not to let a small amount of impurities (whether fine metals or defective beans) affect the aroma of coffee, it is necessary to go through complicated screening procedures to select coffee beans of consistent quality and high quality.

Coffee trees are planted in a good environment free of pests and diseases, discarding green, dry, abnormal seeds and planting only healthy mature coffee beans.

Density screening: the fresh fruit picked by water buoyancy will float immature rotten fruit, let stones, metals and other heavier impurities sink to the bottom, use the "peeling machine" can be removed from the fruit skin without damaging the seeds

In order to make the seed free of odors and defects, the fruit is fermented properly to remove the pulp attached to the seed.

The final step in drying the green beans is to dry them in a heated dryer to avoid over-fermentation, overheating, and mildew, and to keep them in an optimum dry condition

To remove the skins and shells of green beans after the drying process, distinguish clean green beans by size, shape, and density, and pick out cracked, deformed, and abnormal green beans.

Color classification: pick out the abnormal color of clean raw beans (normal color is green), remove foreign impurities such as bad smelly beans, stones, wires, dust, dust, etc.

Further density screening with air circulation and vibrating conveyor belts

Odor classification: coffee beans must be free of mildew or any foreign smell

Distinguish green beans by baking color consistency: remove overcooked or undercooked beans

Classify crops by age, origin, and time of delivery.

Most growing countries already maintain the quality of green beans according to the above classification system, some countries consider combining the above classification system to classify green beans, different kinds of coffee beans are mixed at the same time, just like mixing food, if the high-grade coffee beans and poor coffee beans will be mixed, the coffee quality will be reduced.