Eye of Newt, Toe of Frog: An A to Z Guide to the Folk Names of Herbs

You're probably familiar with the above quote from the "Song of the Witches" in Shakespeare's play Macbeth. It's one of the most famous witchy quotes and mentions a variety of spooky and somewhat disgusting ingredients being added to a potion the witches are brewing. However, not all is as it appears. In fact, none of the ingredients are actual animal parts, but instead plants.