Protan Raisin is a proanthocyanidinic tannin extracted from the skin of white grapes. It is a classical refinement tannin, which can be used in the last refining stages or before bottling.

Protan Raisin adds smooth skin tannins which integrate perfectly with the tannic structure naturally present.

The doses of utilization of Protan Raisin vary between 5 and 30 g/hL. Protan Raisin, thanks to its action mechanism, mellows tannic astringency, while increasing wine structure.