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22 votes
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What is the difference between Robusta and Arabica?

One reason that the taste isn't as good for Robusta is that it has more caffeine compared to Arabica. Which may sound like a positive thing but caffeine carries a bitter taste which makes it an ...
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  • 1,222
14 votes

Are robusta and arabica the only bean varieties?

Coffea Arabica and Coffea Canephora are the only two species of plants whose beans we use to make coffee - Arabica and Robusta respectively. However, you may have heard of other 'types' of coffee ...
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13 votes
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Are robusta and arabica the only bean varieties?

There are several varieties of coffee that have all derived from the three species of Coffea genus of the Rubiaceae family: Coffee Arabica Coffee Canephora (Robusta) Coffee Liberica (Liberian) As ...
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  • 515
12 votes

Are robusta and arabica the only bean varieties?

Intended mostly as an adjunct to @fredley's answer, but content overflowed a comment, then I kinda went overboard. Though there are two (major) species of coffee (whose binomial names are indeed ...
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11 votes
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If I'm in a rush, can I simply use raw ground coffee like instant coffee?

It boils down to taste - some people even chew whole beans. Safety-wise there are no concerns1 and the method you propose is not unheard of, it goes by the term "Cowboy coffee" and others. Some ...
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  • 3,853
8 votes

If I'm in a rush, can I simply use raw ground coffee like instant coffee?

Seems like a bad way to start a day to me. This method will over brew the coffee and give it a gritty texture (especially at the bottom) but as the other poster have mentioned it really just boils ...
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  • 513
8 votes
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How do I judge the quality of 'green' beans?

I have been purchasing everything from cheap beans to rather pricey beans and what i discovered while buying the more pricey (and higher quality) beans was that the fragrance of the bean is somewhat ...
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  • 1,381
7 votes

Are robusta and arabica the only bean varieties?

@To complement on the previous answers. About the Rubiaceae families that are used for producing a good cup of coffee. Besides the Arabica and Robusta families, you also have very good coffee ...
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  • 655
6 votes

What is the difference between Robusta and Arabica?

Robusta and Arabica refer to different beans that are used for the coffee. In general it can be said, that Arabica beans contain less caffeine, and less acid than Robusta beans. The robusta plant ...
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  • 391
5 votes

How should I start a coffee export business?

As another dimension, I see a few trends that you might wish to consider. Green beans. More people are getting into home roasting, and green (processed but un-roasted) beans are the vehicle. Also, ...
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  • 8,497
5 votes
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Which vitamins & minerals does coffee provide?

Here are some nutritional information for brewed coffee that list macro- and micro-nutrients such as those you list: from CoffeeAndHealth from Self the Google search page includes nutrition ...
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  • 8,497
4 votes

What are the differences in perceived quality of Robusta vs Arabica bean blends?

Robusta is often used to "cut" blended coffee because it is most often cheaper to purchase than Arabica beans. Since it generally has a higher level of caffeine than Arabica, it may also be used to ...
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4 votes
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How much caffeine is in 1 teaspoon of ground Arabica coffee?

The caffeine content of Arabica beans is around 1,2% of its mass. A standard measure of a teaspoon is approximately 5ml. That means you get around 5g of ground coffee in one teaspoon, which totals ...
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4 votes

How acidic is Liberica compared to Arabica and Robusta?

Today I had a coffee tasting of Liberica on various roast levels. I can say that Liberica is totally different from Arabica and Robusta. Arabica generally is bitter with a lack of after taste Robusta ...
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4 votes

If I'm in a rush, can I simply use raw ground coffee like instant coffee?

There are absolutely no safety problems here. For reference, what you are describing actually was THE method of brewing coffee before the invention of filters! (See for example the wikipedia article, ...
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  • 183
3 votes

Why do my Arabica beans smell and taste of burnt rubber?

First thing to keep in mind is that taste varies from person, so you may try other beans/brews that have similar descriptions, so you can learn about your own taste perception. That been said, would ...
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3 votes
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Is it Okay to Reuse One-time Coffee Filter Cups for Coffee Pods?

If you can remove the coffee grounds/filter and replace just those, then yes it will be safe from a health perspective. The plastic in the filter "cone" should be food safe, though durability may be ...
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3 votes

What is the difference between Robusta and Arabica?

In the global market for coffee beans, Arabica coffee beans make up about 60% of the market, Robusta about 35% and 5% is made up of other coffee beans like Liberica. Both coffee beans belong to the ...
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  • 266
3 votes

How should I start a coffee export business?

The answer is going to depend a lot on what you already have and what you are trying to do, and it is hard to give a solid answer without knowing the specifics. Are you a coffee producer? Are you ...
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  • 655
2 votes

How should I start a coffee export business?

I'd recommend firstly mapping your local market in order to identify your local competitors and focus on for example: What they have to offer? What makes them unique? What products they sell? Who are ...
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2 votes

To what extent have C. arabica beans been replaced by rust-resistant cultivars?

Even with the impact of below average crop yields from Coffee Rust, Arabica beans still make up at least 75% of the world's coffee crop. Although they are affected by the rust, Arabica plantations ...
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  • 655
2 votes

Which vitamins & minerals does coffee provide?

I ain't a specialist or health expert, but here seems to be a very helpful site: Coffee, brewed from grounds, prepared with tap water, Nutritional Facts & Calories. Gives you all the data you ...
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  • 1,852
2 votes
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Using Arabica coffee beans for making instant coffee

The process should be quite the same. At least, according to this wholeseller's website. As far as I understand this company sells 100% Arabica or Robusta OEM instant coffee. For example, the well-...
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  • 7,593
2 votes

How acidic is Liberica compared to Arabica and Robusta?

I am a new member of stackExchange. I grow liberica in Malaysia. I have been helping farmers reviving abandoned liberica farms and working to improve the milling process and the subsequent roasting. ...
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2 votes

How much caffeine is in 1 teaspoon of ground Arabica coffee?

Ground coffee density is 365 kg/m³, so it's 2,72 times less dense than water, therefore 5 ml of ground coffee means 1.83 g, which equals to 22 mg of caffeine if the concentration is 1,2%.
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2 votes
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Decreased blood acidity

Our blood ph level drives our respiratory rate, if we are not breathing out enough CO2 we build up carbonic acid which in turn drives our respiratory rate higher until such time we have reduced our PH ...
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  • 36
1 vote

How to make 50 litres of cold coffee from ground coffee?

I use almond milk bags and a one gallon pitcher. I grind French Roast coffee beans for 36 cups on a semi-course grind, fill the milk bag with the grounds, add cold water to the pitcher with the bag ...
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1 vote

Why do my Arabica beans smell and taste of burnt rubber?

Robusta is very uncommon, because its thought of as undesirable. Arabica is a very broad generalization for beans. Generally the bean, before its roasted, is profiled by its subspecies(aka variety), ...
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  • 538
1 vote

What is the difference between Robusta and Arabica?

I know that Arabica is a prime quality of coffee whereas Robusta is less and cheaper. At my company, my co-workers and I like a blend of both though. That is why we always buy the best type of both ...
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