In the 60s & 70s they wre all hyped up about red wines. - ox blood was in it.
Disrespect for God’s law is so rampant that whole blood, blood plasma and blood fractions are used freely in numerous products that are sold for food. For example, it is reported that some meat packers include blood as a part of their regular recipe for wieners, bologna and other cold-meat loaves. They may not all call it blood; but, regardless of what they call it, if it is blood or part of the blood it is wrong. Not all meat packers do this by any means, but some do. In certain localities it is also known that hamburger is made up largely of fat with blood added. In Russia blood bakeries were put in operation years ago where seven parts of rye flour are mixed with three parts of defibrinated ox blood in the bread. In other lands some bakers use dried plasma powder in pastry as a substitute for egg white. And various tonics and tablets sold by druggists show on their labels that they contain blood fractions such as hemoglobin. So it is necessary for one to be alert, to be acquainted with the practices in his community, to make reasonable inquiry at places where he buys meat and to read and understand the labels on packaged goods. As the old world becomes more careless in its attitude toward God’s law on blood it is important for Christians to exercise increased care if they are to keep themselves “without spot from the world.”—Jas. 1:27.
The Watchtower 1961, 9/15, page 557 par. 14
Due to illegal adulteration of a number of Italian wines, for example, many persons have in recent years and months unknowingly purchased concoctions made from apples and molasses, animal feed, figs and dates, synthetic alcohol and dried ox blood. The Italian police reportedly tracked down about ten million gallons of adulterated wine in 1970 alone. This would suggest that anyone buying wines, especially travelers, must exercise care.
Awake! 1971, 8/22, page 25