Made from a blend of polysaccharides and diatomaceous earth — the fossilized skeletons of hard shelled algae. Hot mix is recommended for fining wine. Sparkalloid has a reputation for creating brilliant wine, and does not strip character if used moderately. As the hot mix name implies, it is first dissolved in hot water before being added to the wine while still warm. The preparation instructions are very easy to follow. Sparkalloid takes time to settle out and should be applied at least a month before bottling.