I've infused them in oil and I agree that you should save the oil for other uses besides soap because the scent is very fragile and gets destroyed by the high temp of cp soap making. the best way to infuse the oil is to cut down the middle of each seed pod, pop them in the oil and infuse in the sun for 4 weeks or so. If you want to speed up the process you can put them in the oil that you have on the stove on a very low setting so the oil is just a bit warm and that will kick start the process. Hope this helps!