BRIT DISCOUNT BOOZE CRISIS: Grocery Chain Cancels Prosecco Promotion Amid Talk of Shortages Kelly Faircloth6/01/16 12:20pm723EditInvite manuallyPromoteDismissUndismissHideGo to permalinkMeanwhile, across the pond: worries about a prosecco shortage are reaching crisis levels, as high demand forces grocery store Sainsbury’s to cancel a discount on the seasonal treat. Will summer 2016 recover?