don't know if it's RSO, it's made with an oz of seeds and enough grain alcohol to cover them and leave out to evaporate, then heat a little to get the seeds free of the oil. they get coated. not to much heat it will cook it. it's been awhile but I think it put out 3 or more grams. and tasted great!!! damn can't even remember how long ago it was that I bought weed with seeds.