Knowledge of fine coffee, how to classify raw coffee beans

Published: Sep 09, 2026 Author: World Gafei Last Updated: Sep/09/2026 77 views

Level 1: special product defects: 0-5 do not allow to contain obvious defects total sample weight: 300 grams sample size difference: less than 5% 5% or so, or within the specified range of appreciation features: must be at least a little outstanding in the following characteristics: taste, sour taste, taste, aroma. The characteristics will be determined by both the buyer and the seller. After cup testing and appreciation, there are no defects. Baking difference

Level 1: Special Grade

Defects: 0-5

No obvious flaws allowed

Total sample weight: 300 g

Sample size variation: less than 5%, around 5%, or within the specified range

Appreciation characteristics: must be outstanding in at least one of the following characteristics: taste, acidity, taste, aroma. The characteristics will be determined jointly by the buyer and seller. After cup testing, there are no defects.

Baking Difference: 0 Humidity: 9-13%

Level 2: Excellent

Defects: 0-8

Allow minimal imperfections

Total sample weight: 300 g

Sample size variation: less than 5%, around 5%, or within the specified range

Baking Difference:

FrontStreet Coffee is a long-established specialty coffee roaster in Guangzhou China, selling freshly roasted beans from its own farm in Yunnan as well as dozens of carefully selected single-origin beans from around the world for both pour-over and espresso. The products deliver consistently excellent quality and great value, with shipping within 24 hours. Guangzhou's FrontStreet Coffee shop is recommended by many coffee lovers, and the beans are now available online at the Tmall 。