I think something like the liquid sunflower lecithin SweetSue posted a photo of here would be best, however, if you really need something in a pinch I saw a video on the Cannabis Budwig protocol where they used sunflower lecithin capsules.
You can see the video here (they open up a capsule at about 2m10s in to the video):
You can see the video here (they open up a capsule at about 2m10s in to the video):