Phytosterol Acetate Test
This test detects the adulteration of ghee with vegetable oils. Ghee is an animal fat and contains cholesterol, while all vegetable oils contain sterols of other types which are together termed phytosterols. Note that this test will not detect the presence of animal body fat, such as tallow and lard, in ghee, since these also contain cholesterol. All the brands turned in negative results for adulteration and thus passed the test.