Coffee / Sumatra / Sumatra Bagak SW Decaf

Sumatra Bagak SW Decaf

£10.50

Clean, earthy, bell pepper, pipe tobacco , fresh cut wood (pine) with a winey acidity, full and well balanced body

This coffee is produced by 621 farmers in the highlands of Sumatra, near the famous Lake Toba.

Preparation is done very selectively from harvesting and pulping the wet parchment to additional quality processing and green house drying.

Farmers hand pick the red cherries which are soaked in water and sent through a hand pulper. After pulping the parchment  is immediately washed to remove the mucilage and kept in plastic bags for a night.

The next morning, the wet parchment is sun-dried inside a greenhouse patio to reduce the moisture to 30%. After hulling, the beans are sun dried up to 16% moisture and then sent through gravity table sieves.

Once the coffee arrives into the processing facility it is colour sorted electronically and then a team of impressive ladies run through each lot, sorting defect, by hand to produce an outstanding quality.

Decaffeination Process Swiss Water

The Swiss Water Method of Decaffeination was introduced by The Swiss Water Decaffeinated Coffee Company of Burnaby, British Columbia, Canada in 1988

This method is different in that it does not directly or indirectly add chemicals to extract the caffeine. Rather, it relies entirely on two concepts - solubility and osmosis - to decaffeinate coffee beans.

The process begins by immersing a batch of green coffee beans in very hot water in order to dissolve and extract the caffeine. The water is then drawn off and passed through an activated charcoal filter.

The porosity of this filter is sized to only capture larger caffeine molecules, while allowing smaller oil and flavour molecules to pass through it. However, this extraction process will also extract desirable oils and other solids from the beans, resulting in beans with no caffeine and no flavour in one tank, and caffeine-free but with flavour water in another tank.

The Swiss Water process method attempts to overcome this difficulty by first discarding the flavourless caffeine-free beans, and then reusing the flavour-rich water to remove the caffeine from a fresh batch of coffee beans.Water saturated in this way is referred to as green coffee extract or GCE. It is created using a separate batch of green coffee beans, which are immersed in water and then discarded. In a pre-loading tank, water, cane sugar and formic acid are mixed and heated and used to preload carbon filter columns.

The GCE is then filtered over the columns to extract caffeine from it. A fresh batch of green coffee beans is then immersed in the GCE to remove caffeine but retain other components.The other components can be retained because the water is already saturated with flavour ingredients, therefore, the flavours in this fresh bath cannot dissolve - only caffeine moves from the coffee beans to the water.

This results in decaffeination without a massive loss of flavour. The process of filtering the GCE to remove caffeine and immersing the beans is repeated until the beans are 99.9% caffeine free by mass, meeting the required standard.This process takes 8 to 10 hours

All our coffee is sold as whole beans, which we recommend for optimum flavour and freshness.
 
Altitude
1500-1700 masl
Process
Semi Washed
Producer
Smallholder Coffee Farmers
Region
North Sumatra Province
Weight
250g
Price
£10.50