This research, the shallot extraction process is done by Microwave Steam Diffusion method modified with the addition of ultrasonic. This method can produce product (yield) with high quality of essential shallot oil with lower processing energy requirement. The variables used are Microwave Steam Diffusion (MSDf) and Microwave Ultrasonic Steam Diffusion (MUSDf) with extraction time of 40, 50, 60 and 70 minutes. The result of this research, shows that the best method to produce red shallot oil extract is by using MUSDf method which has obtained yield of 0.96 ml/kg, 61.14% organosulfur and 60 minutes optimum time of extraction.
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