Description for the typical buttery-creamy taste of a wine as part of a wine address by one malolactic fermentation (BSA) arises and fruity Flavors covered. But this is not considered wine faults understood (see under buttery ). In case of improper course of malolactic fermentation can through Lactic acid bacteria various serious wine defects such. B. bitter. vinegar sting. Geranienton. Lindton. Mannitstich or Lactic acid sting (Buttersäurestich, yogurt, sauerkraut) arise.