Sorry JayT et. al if I am re-stating something basic... but I felt it needed saying just so that there isn't confusion. I could also be misunderstanding the statement you are making. lol.
There wasn't any oil involved really. i.e. no frying. These were steamed in a pan with holes over some boiling water for ten minutes. What might be viewed as oil in the picture was probably water, if anything. I did spray the holed part of the pan with cooking spray to prevent sticking, but that's about all the oil there was. I dusted with corn starch to also help with sticking, some didn't completely disappear on the ends but most did.