Double Take On Double Decanting So doing something once is good but decanting twice is better? Double decanting red wine involves pouring the wine from its original bottle into a decanter, then back into the original bottle. This process exposes the wine to more air, which can improve its flavor by having the wine breathe. Besides improve the aroma double decanting can separate sediment which removes it before pouring back into the original bottle. When you decant once the wine and bottle are...