Yes, the cauliflower rice needs some help on its own. I recommend making a nut/seed spread and mixing it with the cauliflower rice. It also makes the mixture stickier like sushi rice. cashews, sunflower seeds, pumpkin seeds, almonds all would work.. blend with a little coconut milk, seasonings, etc into a thick paste and then mix it with the cauliflower.
RE: RAW VEGAN VEGGIE ROLLS