Coffee Varietals & Genetics

The family tree of flavor — from ancient heirlooms to climate-resilient hybrids

Species	Global Production	Caffeine	Chromosomes	Flavor
C. arabica	60-70%	1.2-1.5%	44	Complex, sweet, acidic
C. canephora (Robusta)	30-40%	2.2-2.7%	22	Bitter, harsh, earthy, full body
C. liberica	<2%	1.2%	22	Woody, smoky, fruity, floral

Arabica is a natural hybrid of Robusta x C. eugenioides, occurring ~10,000-15,000 years ago in Ethiopia/South Sudan.

Origin: Ethiopia (Gesha village, 1931) → Panama

Cup: Jasmine, bergamot, tropical fruit, honey, black tea. Tea-like body, pristine acidity.

Why it matters: Produces flavors so different from typical coffee it redefined specialty scoring. Regularly 93-98 points.

98.00 points (Best of Panama 2025) | Risk: Low yield, disease-susceptible, needs 1,700m+

Origin: Scott Labs, Kenya, 1930s (from Tanganyika Drought Resistant)

Cup: Blackcurrant, grapefruit, wine-like phosphoric acidity, complex sweetness, juicy body

Why it matters: Most distinctive acidity in all coffee. Blackcurrant note is diagnostic.

Kenya AA premium | Risk: Very susceptible to CBD and leaf rust

Origin: Scott Labs, Kenya, 1930s (from French Mission Bourbon)

Cup: Heavy body, complex citrus, dark fruit, less acidity than SL28 but more body

Why it matters: Pairs with SL28 to create the complete Kenyan cup.

Kenya high-altitude | Risk: Susceptible to CBD

Origin: Yemen → Île Bourbon (Réunion), 1700s

Cup: Sweet, caramel, chocolate, red fruit, balanced acidity, round body

Why it matters: Mother of most modern high-quality varietals. Clean, sweet, versatile.

Pink Bourbon: extremely rare and sought-after | Risk: Low yield relative to modern varieties

Variants: Red Bourbon (classic), Yellow Bourbon (sweeter), Pink Bourbon (extremely rare, Colombia), Orange Bourbon (very rare)

Typica (Yemen → India → Java → Americas) — Sweet, clean, moderate acidity, elegant. Ancestor of most American Arabica. The baseline.
Caturra (Natural dwarf Bourbon mutation, Brazil 1937) — Bright acidity, citrus, medium body. Colombia's former dominant variety. Good but not exceptional.
Catuaí (Caturra × Mundo Novo (Brazil)) — Nutty, chocolate, sweet, balanced. Workhorse of Brazilian and Central American specialty.
Pacamara (Pacas × Maragogipe (El Salvador, 1958)) — Floral, complex, herbal, citrus, full body. Large beans (screen 19+). Competition darling.
Mundo Novo (Bourbon × Typica natural cross (Brazil)) — Sweet, balanced, chocolate, nutty. Backbone of Brazilian specialty.

Castillo (Cenicafé, Colombia, 2005) — Variable — best lots clean and sweet. Replaced Caturra after 2008-2011 leaf rust crisis. Controversial.
Centroamericano (H1) (CIRAD/Promecafe F1 hybrid) — Complex, sweet, fruity — rivals traditional varieties. Represents the future: high-quality + climate resilience.
Starmaya (CIRAD male-sterile F1 hybrid) — Sweet, complex, similar to Bourbon. Can be propagated from seed (game-changer).
Batian (Coffee Research Institute, Kenya, 2010) — Good acidity, fruity. Kenya's answer to climate-resilient varieties.