- WHY Cofo Unflavored? Unlike other collagens, ours doesn’t taste and doesn’t smell – really. It’s also 100% soluble in hot or cold liquids. Add Cofo Marine Collagen to your favorite coffee, tea, smoothie, breakfast cereal. With 20 servings per bag and 12g of Protein per serving, this superpowder will help keep you moving and keep your joints, muscles, bones and skin healthy.