How should coffee be stored for freshness?

Storing coffee in an airtight container in a cool, dark place is essential for maintaining its freshness. Coffee beans are sensitive to light, air, moisture, and heat, which can all contribute to the deterioration of flavor and aroma over time. An airtight container helps to limit exposure to oxygen, which can cause the coffee to go stale.

Keeping the container in a cool and dark environment further protects the coffee from heat and light, both of which can lead to oxidation. As a result, this storage method is the most effective way to preserve the natural oils and compounds in coffee, ensuring that it retains its optimal flavor and freshness for a longer period.

The other storage methods are less effective; for instance, using a paper bag does not provide a barrier against air, while storing in a glass jar under sunlight exposes the coffee to light and heat. A plastic container at room temperature does not adequately prevent air and moisture from seeping in, compromising the coffee's quality.