Seeing the cherry
The Coffee Fruit
Coffee is part of daily life for millions of people, yet many who live far from producing countries would struggle to recognize a coffee cherry on the branch. The fruit varies somewhat in size by variety, but it is usually comparable to a small grape. Unlike a grape, however, much of its volume is taken up by the central seeds, while the flesh beneath the skin is relatively thin.
Cherries begin green and change colour as they mature. Most ripen to a deep red, though some trees produce yellow fruit and occasional crosses can produce orange. Red-fruiting varieties are often easier to harvest selectively because their movement from green to yellow to red gives the picker a clearer visual guide. Ripeness matters enormously because it is tied closely to sugar, and sugar is one of the preconditions of delicious coffee. Underripe fruit rarely produces satisfying sweetness; overripe fruit risks turning soft, unstable, and unpleasant.
Ripe flesh
Sweet Fruit
When fully ripe, the flesh of the coffee fruit can be unexpectedly enjoyable to eat. It often carries a gentle melon-like sweetness with a refreshing acidity. It is not a particularly juicy fruit, which is why extracting a drink from it takes effort, but tasting it is still instructive.
That small act reminds us that coffee begins as fruit before it becomes roasting material. The cup we eventually drink is therefore shaped not only by seed chemistry but by the biology of the cherry that surrounded it.
From parchment to bean
The Seed
The seed, which we casually call the coffee bean, is wrapped in several layers that will later be removed during processing. Around the seed sits a protective parchment layer, and beneath that a thinner skin known as the silverskin. These structures matter because they help protect the seed as it moves from harvest to export.
Most cherries contain two seeds that grow facing each other and flatten where they meet. Occasionally only one seed develops properly, producing the rounded form known as a peaberry. Peaberries make up a small share of the crop and are often separated from the rest. Some drinkers and roasters believe they behave differently in the roaster or possess especially desirable flavour, though such claims are not universally accepted.