I used GMO-free sunflower lecithin and got a darker colored concentrate. Also, essential oils tend to permeate plastics. Unless you have a blender set aside just to use with essential oils, you should not use essential oils in your blender. I measured the oils into a pint jar, added the sugar water and lecithin mixture to the oils in the jar, screwed on a lid, and shook vigorously for about a minute. You?ll want to shake the mixture a little before each use as well.