In a medium frying pan over medium heat, toast the white sesame seeds for 2 to 3 minutes, or until they are nicely toasted. To ensure that the sesame seeds are evenly toasted, move them about the pan approximately every 30 seconds. Take out of the pan and let cool (around 5-10 minutes).
Vegetable oil and roasted sesame seeds should be added to a bullet blender. Blend till blended for 30 to 1 minute.
To make sure all the seeds are ground, you might need to shake the container halfway through.
Create a small dish, cover it with cheesecloth and a strainer, and set it aside. To remove most of the particles, strain the oil through the cloth. Place in a fresh, sealed container and refrigerate for up to a month.