It's important not to cover the pot while making ghee because the moisture needs to evaporate for the ghee to clarify properly and develop its characteristic flavor and aroma. Covering the pot traps the moisture, hindering this process.
Making ghee involves simmering butter over low heat to separate the milk solids from the butterfat. The water content in the butter needs to evaporate completely for the ghee to achieve its desired purity, flavor, and shelf life. Covering the pot prevents this evaporation, leading to several problems:
Incomplete Clarification: Trapped moisture hinders the separation of milk solids, resulting in a cloudy ghee with a shorter shelf life.
Altered Flavor: The characteristic nutty flavor of ghee develops as the milk solids brown. Moisture prevents proper browning, leading to a less intense and potentially off-putting flavor.
Increased Risk of Splattering: Trapped steam can cause the hot ghee to splatter more aggressively, posing a safety hazard.
Foaming Issues: While some foaming is normal, excessive foaming due to trapped moisture can make it difficult to monitor the ghee's progress and prevent it from boiling over.
Therefore, leaving the pot uncovered allows the water to escape, ensuring proper clarification, flavor development, and a safer cooking process.
Use a wide, heavy-bottomed pot to make ghee. This provides a larger surface area for evaporation and helps prevent scorching, ensuring even heating and a better final product.