Coffee Trading: Arabica vs Robusta Explained

Global coffee production exceeds 170 million 60-kg bags annually, with approximately 60% Arabica and 40% Robusta. Brazil is the dominant producer (roughly 35% of global output), followed by Vietnam (primarily Robusta), Colombia, Indonesia, Ethiopia, and Honduras. The coffee market supports the livelihoods of an estimated 125 million people worldwide.

Coffee consumption is growing at 2-3% annually, driven by emerging market demand (China, India) and specialty coffee trends in mature markets. Climate change poses a significant threat to coffee production, particularly Arabica, which requires specific altitude and temperature conditions.

Arabica coffee (Coffea arabica) grows at higher altitudes (800-2,200 meters), has lower caffeine content, and is prized for its complex, nuanced flavors. It commands a premium price and is used in specialty coffee and premium blends. Colombian, Ethiopian, and Guatemalan Arabicas are particularly valued. Arabica is more susceptible to disease (coffee leaf rust) and climate stress.

Robusta coffee (Coffea canephora) grows at lower altitudes, has nearly double the caffeine content, and produces a stronger, more bitter flavor. It's widely used in instant coffee, espresso blends, and commercial-grade products. Vietnam is the dominant Robusta producer. Robusta is hardier and more resistant to disease, with higher yields per hectare.

Arabica coffee is priced on the ICE New York 'C' contract (US cents per pound, in 37,500-lb lots). Robusta is priced on the ICE London Robusta contract (USD per tonne, in 10-tonne lots). The Arabica-Robusta spread fluctuates based on relative supply-demand, typically ranging from 30-80 cents per pound.

Physical coffee trades at differentials to these benchmarks. Colombian Milds might trade at 'C' plus 15-30 cents, while lower-grade Brazils might trade at 'C' minus 10-20 cents. Specialty single-origin coffees can command significant premiums above exchange prices, traded through direct relationships or specialty importers.

Coffee is traded in 60-kg jute or polypropylene bags, with standard lot sizes varying by origin. It ships in 20-foot containers (approximately 250 bags or 320 bags depending on packing). Temperature and humidity control during shipping is important, as coffee absorbs moisture and odors — container desiccants and proper ventilation are essential.

Major coffee export ports include Santos (Brazil), Ho Chi Minh City (Vietnam), Cartagena (Colombia), and Mombasa (Kenya). Coffee grading systems vary by origin — Brazil uses a defect-count system, while Ethiopia uses cupping scores. The Specialty Coffee Association (SCA) scoring system (80+ points) defines specialty-grade coffee.