The elaborate art of coffee cupping: Step by step
How do you tell the difference between good coffee and truly exquisite coffee? It's a seven step process.
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Cupping Step 4: Make a crust( Deborah Netburn )
Step 4: Add water
Ryan Brown pours boiling water over the beans, which makes the grounds float to the top. That is called a "crust."
While pouring, Brown announced that the water was from two different sources. "It's a blend, not a single source," he said. (That is called "coffee nerd humor.")