Burundi Kibingo Oro Anaerobic
Process: Anaerobic fermentation - ORO Yeast
Notes: apple | redberries | champagne
The Kibingo washing station is in the commune of Kayanza in northern Burundi. The station itself sits 1,893 meters above sea level. The altitude of the farms in the neighboring hills that supply the washing station varies from 1,700 to 1,900 meters above sea level.
The washing station is equipped with 10 fermentation tanks, 2 soaking tanks and a drying field with 165 drying tables and 4 pre-drying tables. Kibingo can process 750,000 kg of cherry per day.
LALCAFÉ ORO™ yeast (Saccharomyces cerevisiae) was specially developed for coffee production over a four-year period of research and trials. Trials in various regions and environments showed that Oro is well suited to better control the wet process’ efficiency and to upgrade the cup quality. Oro’s ability to flourish even at low temperature means it is equally suited for use across most altitudes. The yeast is able to control the fermentation process against the risk of spoilage micro-organisms that can generate undesirable defects. Furthermore, its specific metabolism and its high capacity of implantation even at cold temperatures (minimum 15°C inside the coffee tank) allows for the expression of fresh and fruity characteristics of the coffee beans while respecting the varietal original aromas of the beans.
The longer fermentation time for yeast processed coffees (washed processed typically ferments for about 12 hours) also allows for more developed flavors. The extra time enables the beans to absorb metabolites, which can enhance flavors. Complexity, acidity, brightness, floral and high notes and more are all boosted by the lengthened fermentation time.
After fermentation is completed, coffee is run through washing and grading canals. In total, the channel separates beans into seven grades according to density. After washing, this parchment is poured onto wooden trays or nylon bags and carried to the drying tables, each in its separate quality group. Each tray and nylon bag of parchment keeps its traceability tag with all info.
The beans are then transported to the drying tables where they will dry slowly for 2-3 weeks, during which time the parchment is repeatedly sorted and sifted to ensure even drying. The parchment is left to dry from sunrise to sunset and is covered with a sheet during the evening or when it rains. If the weather conditions are good, the parchment takes on average 10 to 14 days to dry. The moisture level is carefully monitored and any parchment with visual defects is removed.
Once dry, the parchment coffee is then bagged and taken to the warehouse. Greenco’s team of expert cuppers assess every lot (which are separated by station, day and quality) at the lab. The traceability of the station, day and quality is maintained throughout the entire process.