Mountain Water vs. Sugarcane Decaf:
Key Differences

We recently had some Mountain Water Process Decaf land in New Zealand and we thought this would be a great opportunity to provide some information on the two types of Decaf that we currently have in our warehouses.

The word ‘decaf’ may ruffle a few people’s features but Decaf coffee has come a long way from its traditional reputation. Two popular methods of decaffeination, the Mountain Water Process and the Sugarcane Decaf (also known as the Ethyl Acetate Process), each bring their own characteristics to the coffee experience. Let’s have a look at the two:

Mountain Water Process Decaf

Mountain Water Process Decaf

The Mountain Water Process is a natural and chemical-free method of decaffeinating coffee. This process uses pure mountain water, typically from the regions surrounding the volcanic mountains of Mexico, hence the name. The method was developed in the 1980s and has gained popularity for its commitment to maintaining the coffee’s flavour integrity.

Here’s a simplified breakdown of the Mountain Water Process:

  • Soaking: The green coffee beans are soaked in hot water, which dissolves the caffeine along with other soluble compounds.
  • Filtration: The water, now containing caffeine and other soluble compounds, is passed through a carbon filter that traps the caffeine molecules.
  • Re-soaking: The beans are then reintroduced to the filtered water, allowing them to reabsorb the flavours and oils that were lost during the initial soaking.
  • Drying: Finally, the beans are dried to their original moisture content.

Flavour Profile:

Since the Mountain Water Process relies solely on water and physical filtration, it tends to preserve the coffee’s original flavour profile quite well. You’ll often find that the coffee retains much of its nuanced taste, making it a favourite among those who don’t want to sacrifice flavour for a lack of caffeine.

Environmental Impact:

This method is considered environmentally friendly because it avoids using chemical solvents, which appeals to many people. The reliance on natural resources (mountain water) and physical filtration means fewer chemicals enter the ecosystem.

Sugarcane Decaf (Ethyl Acetate Process)

The Sugarcane Decaf method uses a natural solvent derived from sugarcane, known as ethyl acetate, to remove caffeine from coffee beans. It’s often referred to as the Sugarcane Process because of its use of this sugarcane-based compound.

The Process:

  • Steaming: The green coffee beans are steamed to open their pores.
  • Extraction: They are then washed with a solution containing ethyl acetate, which selectively removes caffeine.
  • Cleaning: The beans are steamed again to remove any residual solvent.
  • Drying: Finally, the beans are dried to their proper moisture content.

Flavour Profile:

Ethyl acetate is an effective solvent for removing caffeine but can sometimes alter the coffee’s flavour slightly. Though many people find that the impact on taste is minimal, it’s still a chemical process and may not preserve the original flavour profile as well as the Mountain Water Process.

Environmental Impact:

The use of ethyl acetate, while derived from natural sources (sugarcane), involves a chemical process that might not be as eco-friendly as the Mountain Water Process. However, the industry is continually improving its practices to reduce environmental impact.


 

Let’s Compare:

  • Flavour Preservation: The Mountain Water Process generally excels in retaining the original flavour of the coffee. If you’re a purist, this method might be preferable for you.
  • Environmental Considerations: The Mountain Water Process is arguably more environmentally friendly as it avoids chemicals entirely. The Sugarcane Decaf Process, while utilizing a natural solvent, still involves chemical treatment.
  • Availability and Cost: Sugarcane Decaf might be more widely available and potentially less expensive due to the broader scale of production. The Mountain Water Process can be more niche and might come at a premium.

Which One Should You Choose?

Ultimately, the choice between Mountain Water Process Decaf and Sugarcane Decaf comes down to personal preference and values. If you’re looking for a decaf that maintains the closest flavour profile to regular coffee, the Mountain Water Process is a solid choice. If you’re looking for a more widely available option and don’t mind a slight variation in taste, Sugarcane Decaf could be the way to go.

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