The smoke point of ghee is approximately 250°C (482°F), significantly higher than butter (around 177°C or 350°F) and comparable to some refined vegetable oils.
The smoke point of a fat is the temperature at which it begins to break down and produce visible smoke. When a fat reaches its smoke point, it not only imparts an unpleasant flavor to food but also releases potentially harmful compounds. Ghee, which is clarified butter with milk solids removed, has a high smoke point due to the removal of these solids.
Here's a comparison:
The higher smoke point of ghee compared to butter makes it a better choice for high-heat cooking, as it is less likely to burn and produce harmful compounds.
Always choose fats with a smoke point higher than the cooking temperature you intend to use. Using a fat beyond its smoke point can negatively impact the flavor of your food and potentially release unhealthy compounds.