ArticleFun With Filtration, When To Harvest, and Transporting WineWritten by Alison Crowe. . . a lot of sediment we find in wines actually forms after the wine is bottled, and is nothing that filtration can control.Already a member? Log InYou'll Also Like Article MEMBERS ONLY Understanding "Degree Days", White Film on Wine, and Glass vs. Wood . . . a lot of sediment we find in wines actually forms after the wine is bottled, and is nothing that filtration can control. Already a member? Log In Article MEMBERS ONLY Perfecting Pyment, Vinifera Vines, and Over-Yeasting . . . you could also buy some powdered grape tannin, use oak chips, or even use a cup of strong black tea to add some tannin backbone to the wine if it’d be tough for you to obtain grape skins.