What happens to coffee flavor over time if it is not kept fresh?

Coffee flavor deteriorates over time when it is not stored properly due to oxidation, moisture, and exposure to air. As coffee beans age, their natural oils break down, leading to a significant loss of the original flavors and aromas that make fresh coffee enjoyable. Instead of becoming more pronounced or developing a sweeter taste, stale coffee typically tastes flat, dull, and less complex. The vibrant qualities that are sought after in freshly roasted coffee beans diminish, resulting in a brew that lacks the richness and character desired by coffee enthusiasts. Proper storage, typically in an airtight container in a cool, dark place, is essential to help preserve those delightful flavor profiles.