Arabica vs Robusta: What Is the Difference Between the Two Coffees?

Almost every bag of coffee in a Gulf supermarket says either “100% Arabica”, “Robusta” or “blend”. The words matter: they tell you how the coffee will taste, how strong it will be and, often, why one bag costs more than another. This guide explains the difference between Arabica and Robusta in plain language, with the numbers behind it, and which one to choose for Arabic coffee, espresso or a quick morning cup.

Arabica vs Robusta at a glance

	Arabica	Robusta
Plant species	Coffea arabica	Coffea canephora
Caffeine (green bean)	1.2–1.5%	2.2–2.7%
Sugars (sucrose)	6–9%	3–7%
Lipids (oils)	15–17%	10.5–11%
Chlorogenic acids	5.5–8%	7–10%
Typical altitude	600–2,200 m	0–800 m
Temperature	15–24 °C	18–36 °C
Taste	Sweeter, softer, fruity or floral, brighter acidity	Stronger, more bitter, earthy or nutty, heavier body
Price	Usually higher	Usually lower

Where do Arabica and Robusta come from?

Arabica is native to the highlands of south-western Ethiopia, and Yemen was one of the first places where it was cultivated as a crop. It is an unusual plant: it has 44 chromosomes instead of the 22 found in other coffee species, and it is the only coffee species known to pollinate itself ^[2]. It needs cool temperatures, steady rain and altitude, which is why it is grown in mountain regions such as Ethiopia, Yemen, Colombia, Central America and, closer to home, the Jazan region of Saudi Arabia.

Robusta is the common name of Coffea canephora, which grows wild in central and western Africa. As its name suggests, it is a tougher plant: it tolerates heat and low altitude and is more resistant to pests and diseases such as coffee leaf rust. Today Vietnam, Brazil, Indonesia, Uganda and India produce over 90% of the world’s Robusta ^[3].

Arabica is still the larger of the two, at roughly 60–70% of world coffee production, but Robusta’s share has been growing ^[3].

How do they taste different?

The difference you taste comes largely from chemistry. Arabica beans contain more sugar and more natural oils, and less caffeine and chlorogenic acid ^[1]. During roasting, those sugars and oils turn into the sweet, rounded and aromatic flavours that coffee lovers look for: notes of fruit, flowers, caramel or chocolate, with a pleasant brightness.

Robusta has less sugar and more caffeine and chlorogenic acids, and both caffeine and chlorogenic acids taste bitter. The result is a stronger, harsher and more earthy cup, sometimes with a woody or nutty note. Robusta does have one advantage that baristas like: it gives espresso a thick, long-lasting crema, which is why many Italian-style espresso blends include some Robusta.

Which has more caffeine?

Robusta, by a wide margin. Green Robusta beans contain about 2.2–2.7% caffeine, compared with 1.2–1.5% for Arabica, so a Robusta cup can have close to twice as much caffeine as the same cup made with Arabica ^[1]. Caffeine is one of the plant’s natural defences against insects, which helps explain why the low-altitude Robusta plant carries more of it. If you want to compare coffee with tea, karak or matcha, see our caffeine chart.

Why is Arabica more expensive?

• It is harder to grow. Arabica needs altitude, mild temperatures and careful farming, and it is more vulnerable to diseases such as leaf rust ^[3].
• It is often picked and processed by hand on mountain farms, where machines cannot work.
• Buyers pay for flavour. Arabica is generally seen as the higher-quality coffee, and it usually trades at a higher price than Robusta ^[3].

Arabica, Robusta and Gulf coffee

Traditional Arabic coffee, the gahwa served with dates in every Gulf majlis, is made from Arabica beans, roasted lightly and boiled with cardamom. Lightly roasted Robusta would taste too bitter and harsh for this style, which relies on the delicate, slightly fruity flavour of the bean. In Saudi Arabia, the Khawlani Arabica grown in the mountains of Jazan is so closely tied to local culture that the knowledge and practices of growing it were added to UNESCO’s Intangible Cultural Heritage list in 2022 ^[4].

Read more in our guides to Arabic coffee and Saudi coffee and its regional styles.

Which one should you choose?

• For Arabic or Saudi coffee: choose 100% Arabica with a light roast.
• For filter coffee, pour-over or French press: Arabica, so you can taste the origin and the roast.
• For espresso: 100% Arabica for a sweeter, more aromatic shot, or an Arabica blend with a little Robusta if you like a stronger, more bitter shot with heavy crema.
• If you want the most caffeine for your money: Robusta or a blend with a high share of Robusta.

How to read a coffee label

“100% Arabica” means the bag contains no Robusta at all. “Blend” or “espresso blend” usually means a mix, and the label may or may not tell you the ratio. If a bag does not say anything about the species, it is worth asking the seller. Look also for the roast date, the origin and the roast level: these say as much about the taste as the species does.

Lucarise coffee: 100% Arabica, roasted in Oman

Our coffee beans and ground coffee are 100% Arabica, roasted and packed in our own factory in the Sohar Free Zone, Oman. Our Arabic Coffee with Cardamom uses a light, Gulf-style roast for brewing in a dallah. For homes, cafés and offices across Oman and the GCC, you can also order larger 1 kg packs through our For Business section.

Brewing at home? Get exact grams with our coffee to water ratio calculator.

Frequently asked questions

Is Arabica better than Robusta?

For flavour, most coffee professionals prefer Arabica because it is sweeter and more aromatic. Robusta is not “bad” coffee: it is stronger, has more caffeine and gives espresso a thicker crema. Which is better depends on how you like your coffee.

Which is stronger, Arabica or Robusta?

Robusta. It has about 2.2–2.7% caffeine compared with 1.2–1.5% for Arabica, and it tastes more bitter and intense.

Is Arabic coffee made from Arabica?

Yes. Traditional Gulf Arabic coffee and Saudi coffee are made from lightly roasted Arabica beans boiled with cardamom.

What does “100% Arabica” mean?

It means all the beans in the pack are from the Arabica species, with no Robusta mixed in. It says nothing about roast level or freshness, so check those too.

Can you mix Arabica and Robusta?

Yes. Many espresso blends combine mostly Arabica with some Robusta to add strength, body and crema.

References

1. Compound Interest (2023). Arabica vs Robusta: the chemistry of coffee. compoundchem.com
2. Brazilian Journal of Plant Physiology. Coffee genetics and the self-compatibility of Coffea arabica. scielo.br
3. U.S. International Trade Commission. Executive Briefing on Trade: Robusta on the Rise. usitc.gov
4. Arab News (2022). UNESCO adds Saudi Khawlani coffee, Camel Heda’a to intangible cultural heritage list. arabnews.com