COSTA RICA 90+, FINCA LA ORTIGA
honey anaerobic fermented
This coffee is an anaerobic process coffee, the whole process is done in stainless steel containers, totally closed. The first step is to select the cherries that will undergo the process. This coffee must be extremely ripe with a Brix degree measurement of its mucilage approaching 26 degrees and above. The coffee is pulped and with all its mucilage is placed in the center of the fermentation tanks. After that, further mucilage from other cherries that are called “donors” will be pulped, based on the above explained criteria of the 26 and above degrees brix.
These cherries are pulped and the parchment is run through the demucilager machine, calibrated very tight to obtain the gel of the mucilage, this gel is added inside the fermentation tanks where the other coffee had been previously placed. The amount of gel should be enough to cover the entire parchment already in the tank.
After this it is mixed well and the tanks are closed hermetically. It is very important that the tank is completely closed because if this is not the case, CO2 escapes there will be no pressure produced and the coffee won’t be considered as anaerobic.
During the fermentation the temperature of the tank is controlled, since the process is required to last approximately between 18 and 23 hours. After 15 hours the PH is measured constantly to know how the fermentation is going. The fermentation must stop when the sugars of the mucilage have been consumed, making sure that that alcohol is not produced. During the fermentation, the CO2 produced by not being able to leave exerts a high pressure on the beans and allows the flavours of the coffee juices to penetrate inside the parchment. Once we measure that the fermentation is over, we open the tanks very carefully (because they have a high pressure it could even explode). Later we drain the gel and immediately after we put the coffee on patios to sun dry.