Coffee Processing - Coffee Harvesting
Learn with Paradox: Coffee Harvesting
We’re continuing our Learn with Paradox series with the next step in the coffee journey: Coffee Harvesting.
At Paradox Coffee Roasters, we’re passionate about sharing our knowledge and love for coffee. In this series, we take you through each stage of the process, from seed to cup.
Harvesting is the next step in transforming coffee cherries into the beans we know and love. The natural sugars in the cherry’s mucilage are crucial, as they ferment during processing to develop the complex flavors found in high-quality coffee. Timing is everything—only ripe cherries are selected to preserve these vital sugars and ensure the best possible cup. Different harvesting methods are used around the world, each with its own benefits and challenges.
Scroll through to learn more about how coffee is harvested!
Coffee Harvesting
Coffee Harvesting is the first step in transforming those little coffee cherries into the coffee we enjoy in our cups. Flavour and quality depend on the natural sugars in the cherry's mucilage, which ferment during processing, creating the complex compounds found in high-quality beans. Retaining these vital sugars rely on harvest timing and carefully selecting the right cherries. There are several methods used to harvest coffee, each with its benefits and challenges.
Selective Picking: The Labor-Intensive Method
The preferred method in high grade specialty coffee is selective picking. It is ideal in steep terrains where machines can't easily reach. This careful process ensures that only the cherries with the most balanced sugar content are harvested, leaving unripe ones to mature for future harvests. It produces the highest quality coffee but is also the most labour-intensive method and puts the most strain on farmers.
Strip Harvesting: Efficient but Less Precise
Strip harvesting involves removing all cherries — ripe and unripe — from the tree at once. This can be done manually by workers or mechanically using machines.
While it is faster and less labor-intensive than selective picking, it can result in a mix of cherries at different ripeness levels. This requires additional sorting to separate the cherries, which can affect the quality of the coffee if not managed properly. Despite this, strip harvesting is often used for larger farms due to its efficiency.
Mechanical Harvesting: Fast and Scalable
Mechanical harvesting uses machines to strip cherries from the tree with rotating mallets or vibrating tools. This method can cover large areas quickly and requires fewer workers, making it cost-effective for big farms. However, it can lead to the harvest of unripe cherries and requires more sorting. Mechanical harvesting is most effective on flat terrain, and while it reduces labour costs, it often compromises the quality of the coffee.
Sorting: Essential for Quality Control
Sorting is a crucial step in the coffee harvesting process. After cherries are harvested, they need to be sorted to remove unripe, overripe or damaged fruit. In selective picking, much of the sorting is done during the harvest, ensuring higher quality with less post-harvest sorting. In contrast, strip harvesting and mechanical harvesting often require more intensive sorting. Proper sorting helps maintain the integrity of the coffee's flavor profile.
Conclusion
Each harvesting method has its advantages and limitations. Selective picking is best for producing high-quality coffee but is quite labor intensive. Strip and mechanical harvesting are more efficient but can result in lower quality coffee if not properly managed.
Ultimately, the harvesting method chosen by different coffee producers reflect the balance between desired coffee quality, labor costs, and the unique size and terrain of the farm.