Butter lamp oil is a mixture of vegetable oil and esters. Commonly used vegetable oil includes corn oil, peanut oil, soybean oil, sesame oil, etc. The esters can be stearate, acetate, stearyl alcohol ester, stearaldehyde ester, etc. In the production process, firstly, vegetable oil and esters are mixed by stirring or heating to form thick oil, and then it is processed by condensation, filtration, separation and other processes, and finally the ghee lamp oil can be obtained.