Yes, ghee can be overcooked. Overcooking ghee can result in a burnt flavor, darkened color, and loss of its beneficial properties.
Ghee is essentially clarified butter, made by simmering butter to remove water and milk solids. The process involves heating the butter until the moisture evaporates and the milk solids settle at the bottom of the pan and brown. The clear, golden liquid that remains is ghee.
However, if the ghee is heated for too long or at too high a temperature, the milk solids will burn. This burning process imparts a bitter, acrid, or burnt taste to the ghee, making it unpalatable. The color will also darken significantly, moving from a golden yellow to a dark brown or even black. Furthermore, excessive heat can degrade some of the beneficial compounds present in ghee, such as antioxidants and vitamins, diminishing its nutritional value.
The ideal temperature for making ghee is a gentle simmer. You want to allow the water to evaporate slowly and the milk solids to brown gradually without scorching. Constant monitoring is crucial to prevent overcooking. Once the milk solids have turned a light golden brown and the ghee is clear, it's ready to be removed from the heat.
Use a heavy-bottomed pan to make ghee. This helps distribute heat more evenly and prevents hot spots that can lead to burning. Also, use medium-low heat and be patient; a slower cooking process yields the best-tasting ghee.