There's Blood in Chocolate Milk
Who doesn't like a good glass of creamy, sweet chocolate milk? You might not after reading this. Occasionally, when cows are milked, some blood may also spill out. While the milk is not approved for sale as straight-up full fat or otherwise, it is rumored (without foundation) in the blogosphere that the blood-laced product is sold for cheap to chocolate milk makers, who hide it with cocoa and coloring. While the "chocolate milk is actually red" rumor may be untrue, the FDA does allow a certain amount of blood and pus cells in milk — though probably not enough to satisfy a vampire.