Ghee does not necessarily need to be refrigerated. Its low moisture content and high fat content inhibit bacterial growth, allowing it to be stored at room temperature for several months.
Ghee is clarified butter, meaning the milk solids and water have been removed. This process leaves behind primarily butterfat. The absence of water is crucial because bacteria need water to thrive. Without water, bacterial growth is significantly slowed, making ghee shelf-stable. The high concentration of fat also contributes to its preservation. While refrigeration isn't mandatory, it can extend the shelf life and prevent the ghee from developing off-flavors over a longer period, especially in warmer climates. If you plan to use the ghee within a few months, room temperature storage is generally fine. For longer storage, refrigeration is recommended. Always use a clean, dry spoon when taking ghee from the jar to avoid introducing moisture or contaminants.
To maximize ghee's shelf life, store it in an airtight container in a cool, dark place, away from direct sunlight and heat, even if you choose not to refrigerate it. This helps prevent oxidation and rancidity.