What moisture-related characteristic is important for green coffee beans before processing?

Excessive moisture can significantly impact the roasting process and lead to various defects in the final product. When green coffee beans contain too much moisture, they can experience uneven roasting, resulting in a lack of balance in flavor and aroma. High moisture levels can also lead to problems such as the development of defects during roasting, including baked or grassy flavors, and may even cause the beans to scorch or burn. Additionally, excessive moisture can promote the growth of mold and raise the risk of spoilage during storage. Therefore, properly controlling moisture levels in green coffee beans is crucial for achieving a high-quality roast that highlights the desired flavors and characteristics of the coffee.