The Journey of Coffee – From Seed to Cup

Coffee is one of the largest commodities in the world, second only to oil. Not only that, it’s one of the world’s most beloved beverages, consumed by billions daily the world over, but what exactly is this magical cup of joy we’re drinking? Where does it come from? and how does it make its way into our morning brew? Let’s explore…

 

At a super-high level, coffee is a drink made by brewing the roasted beans picked and processed from the Coffea genus plant. Whilst they are commonly referred to as coffee ‘beans’, they are technically the pits of the coffee cherries – the fruit produced by coffee plants. The two most commercially significant species of the coffee plant are Coffea arabica (Arabica), which accounts for about 60-70% of global production, and is prized for its nuanced flavors, and Coffea canephora (Robusta), known for its stronger, more bitter taste and higher caffeine content.

 

The coffee plant itself is an evergreen shrub or small tree that can grow up to 30 feet tall in the wild, though cultivated plants are typically pruned to around 6-12 feet for easier harvesting.

 

Coffee thrives in what’s known as the ‘coffee belt’ – a band around the equator between the Tropics of Cancer and Capricorn. This region provides the ideal conditions coffee plants need: moderate temperatures (18-22°c), rich soil, adequate rainfall, and the right balance of sun and shade. Major coffee-producing countries include Brazil, Vietnam, Colombia, Indonesia, and Ethiopia, the birthplace of Arabica coffee.

Coffee plants are remarkably particular about their environment. Arabica prefers higher elevations (typically 2,000-6,000 feet) with cooler temperatures, while Robusta grows well at lower altitudes and tolerates warmer, more humid conditions.

 

The coffee journey begins with seeds, which are typically planted in shaded nurseries. After germinating, seedlings spend several months developing before being transplanted to the field. Young coffee plants require careful tending – regular watering, fertilisation, and protection from pests and diseases.

It takes three to four years for a newly planted coffee tree to bear fruit. Once mature, coffee plants can produce cherries for 20-30 years or more. The plants bloom with fragrant white flowers after rainfall, and these blossoms eventually develop into green coffee cherries that gradually ripen to yellow, red, or sometimes purple, depending on the variety.

 

Coffee cherries don’t ripen uniformly, which makes harvesting a labor-intensive process. There are two main methods:

Strip picking involves running your hand along a branch to remove all cherries at once, regardless of ripeness. This method is faster and often used for Robusta or lower-grade Arabica, sometimes with mechanical harvesters on large, flat plantations.

 

Selective picking is the more meticulous approach, where only ripe cherries are hand-picked. Pickers return to the same trees multiple times over several weeks, selecting only cherries at peak ripeness. This method is labor-intensive but produces higher-quality coffee, as only properly ripened cherries are harvested.

 

 

Once picked, coffee cherries must be processed quickly to prevent spoilage. The goal is to remove the fruit and extract the green coffee beans inside. There are three primary processing methods:

 

Dry processing (or natural processing) is the oldest method, where whole cherries are spread in the sun to dry for several weeks, turned regularly to prevent mold. Once dried, the fruit is mechanically removed. This method imparts fruity, wine-like flavors to the coffee.

 

Wet processing (or washed processing) involves removing the outer fruit pulp with machines, then fermenting the beans in water tanks to break down the remaining mucilage. After fermentation, the beans are washed and dried. This method produces cleaner, brighter flavors.

 

Honey processing (or pulped natural) is a hybrid approach where some fruit is removed but a sticky layer of mucilage remains on the bean during drying. This creates a flavor profile between natural and washed coffees.

 

After processing and drying, the green coffee beans undergo milling to remove any remaining parchment layer (in wet-processed coffee) or dried fruit (in dry-processed coffee). The beans are then sorted by size, weight, and quality, with defective beans removed either by hand or machine. High-quality coffees may be hand-sorted multiple times to ensure consistency.

 

This is where the magic happens in coffee. Green coffee beans have little aroma and taste, at least certainly nothing like the coffee we know. It’s the roasting process that turns these green beans into the delicious brew we adore. During the roasting process, heat triggers complex chemical reactions that develop the coffee’s natural characteristic flavors, aromas, and colours. You can expect a typical roast profile to achieve temperatures of around 180-240°C, and roast times somewhere between 10 – 20 minutes depending on the desired roast level – light, medium, or dark.

 

The journey of coffee is remarkably complex, involving countless hands and spanning months from harvest to your cup. Each step – from the altitude where the plant grows, to the method of processing and the profile the roaster has designed – influences that final flavour. That’s why coffee we find coffee so fascinating. It’s so much more than your everyday product, every brew is a culmination of a global industry, centuries of cultivation knowledge, and the dedicated work of millions of coffee farmers around the world coming together to bring you that cup of joy we so adore.