The clarification or beauty of a wine was performed in ancient times with today's terms often obscure means, for example, with milk (this is in the famous wine book of Johann quickly from 1580), urine (sic) or blood. In the Middle Ages, cattle blood or ox blood (occasionally pig or lamb's blood) for wine adulteration used to give the wine supposedly more color. Partly it was added fresh (still warm) or after drying as a grated powder. At that time, this was sometimes punished with the strictest punishments (from drinking one's own wine in large quantities to the death on the gallows). Among other things, blood consists of proteins (Albumin = also contained in the egg white, globulin and fibrinogen), that is, one could call this practice as a kind of protein beautification (see under beautiful ). At the beginning of 2003, the quarrel between the US and the countries rejecting Iraq's war on France and Germany also led to the issue of "cow's blood in wine". The Republican parliamentary president Dennis Hastert had to examine to what extent the import of French and German products could be limited.
Especially France exports large quantities of red wine and Mineral water in the USA. Hastert commented, "People should know how the French make their wine." Allegedly, some French companies used their wine cattle blood to clarify it. Incidentally, this method was banned within the EU long before the BSE scandal in 1971. In order to warn consumers that the bottle could contain bovine blood, it was considered in the US to provide French red wine with orange stickers in the future. If anything, there are now very few producers who use this method. The fact is, however, that the procedure was still common in the late 20th century and widespread before the EU ban, especially in the Mediterranean area. However, not always fresh blood, but also a (colorless) blood serum was used, which is obtained by separating the blood coagulation causing fibrinogen from the blood plasma. In the production of a kosher wine Blood was always forbidden.