The final decision on the quality of a wine is made by the consumer and, despite all the scientifically based methods of analysis, is a mixture of not purely objective but largely subjective impressions. Whether a wine "tastes good" also depends on physiologically determined likes or dislikes (someone doesn't like red wine because they may have once had a bad experience due to high histamine levels ), the consumer's cultural background and personal experience. From a strict point of view, experiences are subjective, but on the other hand they are an objective criterion ( acidic wines give someone heartburn, which means that such a wine is of poor quality).
The chemist describes by objective analysis how the wine is, the consumer or wine critic describes subjectively how it tastes. The former brings the same result when repeated, the latter is not certain. Ultimately, the saying must be accepted: De gustibus non est disputandum (One cannot argue about taste). A qualitative wine evaluation in the form of a grade and textual description is determined by professional tastings. There are already attempts to determine the "tasteable" quality by means of glycosyl glucose assay.
Wine quality is influenced by origin (source), methods of vineyard management (vineyard), as well as the type of vinification (cellar). The custom of dividing wines into quality classes already existed in antiquity, whereby the origin of the grapes has always played a major role in the assessment. From the 1970s onwards, a system based on origin was introduced in many countries. In the 1990s, the EU established a multi-level quality system with the levels table wine (but see there), table wine, table wine and quality wine (or QbA = quality wine of specified regions), which was valid until July 2009. In some countries, there were also intermediate levels or special designations, such as the Prädikatswein in Germany and Austria. In the countries of the European Union and partly also in the New World, a mostly multi-level quality wine scheme with different designations was or is still valid.
On August 1, 2009, an extensively adapted EU wine market regulation with serious changes in the quality levels and designations came into force. The system of protection of origin of the Community food law was also adopted for wine and great importance was attached to the criterion of origin. The new system now distinguishes between "wine without geographical indication" and "wine with geographical indication". Thus, the quality philosophy of the "Romance wine law", which has always been based on the origin for wine, but also for food and agricultural products, has been taken over, following the example of the French appellation system. In this way, the quality hierarchies, which in many countries are partly defined by the state according to arbitrariness and partly incompatible with each other, are to be replaced, the new levels are to be linked with clear profiles and made comprehensible for the consumer.
According to a transitional period, wines which were marketed according to the "old regulation" before December 31, 2010, could still be marketed until the stocks were exhausted. However, this was not to be confused with the obligation for Member States to submit to the Commission by the end of 2011 the technical specifications for all names of origin to be protected, otherwise international protection for such origin would be forfeited. The new names:
A special feature is the possible processing of grapes from one EU member state in another EU member state. For example, this could be "wine made in Austria from grapes harvested in Italy". Wines from third countries are labelled with an indication of the third country, for example "wine from Chile" or "wine from Australia". A blend of wines from several third countries, for example a Chilean wine blended with...