How are coffee beans graded?

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We have always highlighted how are coffee tastes. Today I am feeling extra nerdy, so I am doing an entire nerdy series of a bean’s journey to becoming Tap Dancers Specialty Coffee.

We have said we only buy specialty grade coffee. Below is how coffee is graded. I will not go into what each item means Lets just leave it at they are defects found in coffee. Grade 1 (Specialty grade) is 0-3 full defects. Also must be free of cup faults and taints. Zero quakers allowed. Moisture content between 9-13%.

Tap Dancers Coffee has zero tolerance for any defect except for shells, broken beans and bug bites. Bug bites confirm that no pesticide was used.

These defects are the cause of why other coffees has a bitter acrid aftertaste and since ours do not have these taints and defects our coffee has a buttery smooth mouthfeel and wonderful lingering aftertaste.

 

 3 Shells 1
 2 sour or rancid beans 1
 2 beans in parchment 1
 1 cherry 1
 1 large husk 1
 2–3 small husks 1
 1 black bean 1
 1 large stone/earth clod 5
 1 medium-sized stone/earth clod 2
 1 small stone/earth clod 1
 1 large stick 5
 1 medium-sized stick 2
 1 small stick 1
 5 broken beans 1
 5 green or immature beans 1
5 insect damaged beans 1
Grade 1: Specialty Grade Coffee Beans: no primary defects, 0-3 full defects, sorted with a maximum of 5% above and 5% below specified screen size or range of screen size, and exhibiting a distinct attribute in one or more of the following areas: taste, acidity, body, or aroma. Also must be free of cup faults and taints. Zero quakers allowed. Moisture content between 9-13%.

 

Grade 2: Premium Grade Coffee Beans: Same as Grade 1 except maximum of 3 quakers. 0-8 full defects.

 

Grade 3: Exchange Grade Coffee Beans: 50% above screen 15 and less than 5% below screen 15. Max of 5 quakers. Must be free from faults. 9-23 full defects.

 

Grade 4: Standard Grade Coffee Beans: 24-86 full defects.

 

Grade 5: Off Grade Coffee Beans: More than 86 full defects.

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