Home Learn Ascorbic acid Decanter Staff November 10, 2010 Vitamin C. Sometimes added to white wines as a preservative. Written by Latest Wine News Police investigate grape heist as Riesling and Sauvignon Blanc go missing in Rheinhessen A royal affair: California wines and historic spirits served at Trump’s state banquet Birds of prey protect wine grapes at England’s Rathfinny Obituary: Jan Boland Coetzee, South African wine and rugby great Château Latour 2012 re-released in a subdued market