Arabica vs Robusta, Explained (Plus Coffee's Rarest Varieties)

Two species dominate the world’s coffee — but the real story is in the rare varieties, and nobody agrees on which country actually invented coffee.

Arabica vs. Robusta

• Arabica (C. arabica)
• ~60% of world production
• Grown at higher altitudes (600–2000m)
• More delicate, susceptible to disease
• Complex flavors: fruit, acidity, sweetness
• Lower caffeine (~1.2%)
• Parent species: Robusta × C. eugenioides
• Robusta (C. canephora)
• ~40% of world production
• Grows at lower altitudes, higher temps
• Hardy, disease-resistant
• Woody, burnt-rubber flavors, heavy body
• Double the caffeine (~2.4%)
• Most ends up as instant/soluble coffee

The Coffee Fruit & Key Varieties

• Cherry is grape-sized; most volume is the seed, thin layer of sweet fruit flesh
• Cherries ripen from green to red (some varieties yellow or orange)
• Ripeness = sugar content; more sugar generally means better cup quality
• Peaberries (5%): single round seed instead of two flat-sided seeds
• Typica: the original variety — excellent quality, lower yield
• Bourbon: natural Typica mutation, prized for sweetness
• SL-28 (Kenya): famous for blackcurrant notes
• Gesha/Geisha: extraordinary jasmine aromatics; highest auction prices

In this episode

0:00 Arabica vs. Robusta: quality, caffeine, elevation
2:48 Typica, Bourbon, SL28, and Geisha
5:01 Where coffee was born: Ethiopia vs. Yemen
6:00 The three waves of coffee

Watch: https://youtu.be/Lxb6myOWjfY
Free guided tasting sheet: https://gillespie.coffee/pages/guided-tasting-sheet
Coffees: https://gillespie.coffee — viewers get 10% with FEARLESS10

Coffee by Gillespie · Fearlessly Roasted