Red Wine treatment of Coffee beans-Honey treatment of Coffee beans in the Sun

Red Wine treatment of Coffee beans-Honey treatment of Coffee beans in the Sun

Acetic acid fermentation-aerobic fermentation

Lactic acid fermentation-anaerobic fermentation

Expectations for the taste:

Acetic acid fermentation: cleaner, more lively acid, brighter acid, citric acid

Lactic acid fermentation: taste more round, less cleanliness than acetic acid fermentation, higher alcohol thickness, malic acid / tartaric acid

Prior to this, the treatment plants used manual operations handed down from generation to generation, such as biting to feel the degree of fermentation of coffee beans. This kind of fermentation is uncontrollable and changeable.

The fermentation method can be controlled to monitor the fermentation degree by controlling the PH value. In order to achieve predictable results, and consistent production of each batch.

Origin information: Cundinamaca province, eastern foothills of the Colombian Andes. It is planted at an altitude of 1800mi 2000 meters, the average temperature is 16 °, the density of raw beans is high, and the requirement for baking is high.

Next, let's talk about the specific process of fermentation. First of all, Colombian farmers carefully pick coffee cherries and carefully select coffee red fruits to ensure that among the coffee cherries selected for processing, the percentage of immature cherries is less than 2%, defective beans less than 3%, and floating beans less than 5%.

The selected coffee cherries are placed in a specific container by the farmer's uncle, which should have a device similar to a red wine fermentation suppository or a single exhaust valve. In this way, carbon dioxide can be spilled through the device to control the concentration of air in the container. At this time, the coffee cherries in the container are fermented with acetic acid, and the beans are relatively bright, clean and citric acid.

In general, the processor injects carbon dioxide into the container to prevent oxidation from producing volatile acid. this process is called lactic acid fermentation, which produces malic acid and stone acid, which is relatively stable, so the beans fermented by lactic acid are more sour, with cheese, nutty and creamy flavor.