[Coda]

Orange pekoe and Earl Grey are both black teas with citrus oils. Distinguishing them is going to be a matter of experience. Sure, they taste different, but unless you're already familiar with both tastes, if someone hands you a cup of one or the other you won't be able to tell what it is, and if someone handed you both cups, you could tell that they weren't the same flavor but wouldn't know which is which.