agar agar powder
Agar-agar is a jelly-like substance that comes from red algea. It's used as a vegan substitute for gelatin, it is white, semi-translucent and sold in both dried strips or in powdered form. Agar agar is 80% fiber.
Agar-agar is an allowed nonorganic/nonsynthetic additive used as a thickener, gelling agent, texturizer, moisturizer, emulsifier, flavor enhancer, and absorbent in certified organic foods (ref).