This diagram is really easy to understand about kinds of coffee and we can see that what they want to say at a glance even though I do not know much about coffee.
This diagram used real cup image to show people understand easily how to make coffee. As you can see the diagram, all of coffee is based on espresso and the types of coffee can be different according to what you put it on the espresso. In my opinion, when I looked at this diagram, I thought that one of aim to diagram is to help people get information more easily at a glance like this.
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