Wine color practice of saignée (exposing wine to red grape skins for only a short period of time in order to give it a lighter feel closer to that of white wine) or by blending a white wine with a red wine. The presence of a complex mixture of anthocyanins and procyanidins can increase the stability of color in wine. As it ages, the wine undergoes chemical autoxidation reactions involving acetaldehyde of its pigments molecules. The newly formed molecules are more stable to the effect of pH or sulfite bleaching. The new compounds include pyranoanthocyanins like vitisins (A and B), pinotins and
European Union wine regulations authorising deviations in vintages of exceptional climatic conditions. The reason why these regulations exist on the EU level is because of the common market inside the EU, which has led to a need to harmonise regulations for various products which traditionally have been regulated on a national level. The EU wine regulations form a framework for the wine laws of the European Union member states. Since national wine laws have a much longer history than the EU wine regulations, the EU regulations have been designed to accommodate existing regulations of several member states. In particular, the existing regulations concerning French