Mum's wine storage was working well , a cool dark place to allow the wine to age and sediments to settle . Despite several cheesecloth strainings before bottling , there was always a layer of sediment in the bottom of each bottle . When one was taken upstairs , opened and allowed to breathe before serving to visitors , the smell of yeast was inevitably the back scent of the 'bouquet' .
However , bottles began disappearing one at a time .