We did a green coffee grading for a Philippine Coffee this morning. This is basically to check how Philippine coffee is and also to get ourselves into this process.
This is from Benguet, a province in northern Philippines. I'm not gonna talk about the farm or something but will talk about grades in coffee.
Let me run through what we have noticed and stuff like that.
1. Stackng hand screen - importance, is that you will have uniform bean sizes, meaning they roast together, no under or over roasted. Aside from the screen will tell you if the beans where harvested within the due time, meaning the beans we more or less of the same time and eliminate unriped ones which have small beans. We have seen different sizes here. This is harvesting and process issues.
2. Bean color - although moisture content might differ, there is a standard, but then again, dry process and wet process differs and dont forget monsooned. But what you really have to look is the faults in these processes, like too much heat for sometime. Moisture affects roasting since during the drying phase in roasting some beans have reached your desire while others havent, which affects taste. We have seen differences in the color. This is drying process issues.
3. Other matters, and deformities - NOTICED WE NEVER POSTED SORTING OUR GREEN BEANS, this is because we only buy and import SPECIALTY COFFEE GRADE BEANS. Anyway for learning and sharing we did this Philippine Coffee. This has issues on processes, since you get foreign matters, hush and deformed beans.
4. Infestation - i made this separate from number 3 since this has to do with growing. and we see it here
We will roast this and try to see its taste now that its sorted out and we will update.
Left - the sorted beans, started with 350grams ended with 310grams
Center - the defective beans
Right - peaberry and some we suspect are undeveloped
Below the right pic - foreign matters