We stock two types of decaffeinated coffee, the Swiss Water Decaffeination process and the high pressure CO2 process.
The original process involved pre-soaking the green beans in very hot water and then a solvent added to remove the caffeine, the solvents typically used are methylene chloride or ethyl acetate.
Originally inspired by having fresh spring water flushing caffeine out of sack of green beans the process carried out in British Columbia now add a final carbon filtering process.
Supercritical CO2 is forced through green beans and it dissolves 97-99% of caffeine. The manufacturers then recover the caffeine and sell it to drink manufacturers.