Production Guide: Reducing Copper in Copper Sulfate Treated Wines … Premium Content Access reserved for Denise Gardner Winemaking Members and Consulting Clients. Related Items:FREE: Checklist: Winery Prep for COVID-19 MitigationProtocol: Heat (Protein) StabilityProduction Guide: Red Wine Processing Techniques to Enhance Red ColorChecklist: Pre-Bottling Timeline for Red WineSpreadsheet: Wine Bottling QA/QC