In fact, U.S. trademark courts have tackled this issue, categorizing Dr Pepper and its knockoffs as “pepper sodas,” even though they contain no pepper, and the “pepper” in Dr Pepper refers not to the spice but either to someone’s actual name or else to pep, the feeling that Dr* Pepper supposedly fills you with. It’s the only category of soda not named for what it tastes like, which to my mind is precisely why Dr Pepper marks such an interesting and important moment in human history. It was an artificial drink that didn’t taste like anything. It wasn’t like an orange but better, or like a lime but sweet. In an interview, Charles Alderton once said that he wanted to create a soda that tasted like the soda fountain in Waco smelled—all those artificial flavors swirling together in the air. Dr Pepper is, in its very conception, unnatural. The creation of a chemist.

The first zero-calorie version of Dr Pepper was released in 1962. This initial “Dietetic Dr Pepper” was a failure, but Diet Dr Pepper became a huge success when it was reformulated in 1991 with a new artificial sweetener, aspartame. It also relaunched with a new advertising slogan. Diet Dr Pepper: It tastes more like regular Dr Pepper. Which it really does. Coke and Diet Coke are barely recognizable as relatives. If Coke is a golden eagle, Diet Coke is a hummingbird. But Dr Pepper and Diet Dr Pepper taste like each other, which is especially interesting since, as Foots Clements pointed out, neither of them tastes like anything else.

Now, many people find the artificiality of Diet Dr Pepper revolting. You often hear people say, “There are so many chemicals in it.” Of course, there are also lots of chemicals in wine, or coffee, or air. The underlying concern, though, is a sensible one: Diet Dr Pepper is just so profoundly artificial. But that’s why I love it. Diet Dr Pepper allows me to enjoy a relatively safe taste that was engineered for me. When I drink it, I think of the kids at that soda fountain in Waco, Texas, most of whom rarely knew the pleasures of an ice-cold drink of any kind, and how totally enjoyable those first Dr Peppers must’ve been.

Each time I drink Diet Dr Pepper, I am newly astonished. Look at what humans can do! They can make ice-cold, sugary-sweet, zero-calorie soda that tastes like everything and also like nothing. I don’t labor under the delusion that Diet Dr Pepper is good for me, but, in moderation, it also probably isn’t bad for me. Drinking too much Diet Dr Pepper can be bad for your teeth and may increase other health risks. But as Dr. Aaron Carroll puts it in his book The Bad Food Bible, “There’s a potential—and, likely, very real—harm from consuming added sugar. There is likely none from artificial sweeteners.”

So Diet Dr Pepper probably isn’t a health risk for me. And yet I feel as if I’m committing a sin whenever I drink Diet Dr Pepper. Nothing that sweet can be truly virtuous. But it’s an exceptionally minor vice, and for whatever reason, I’ve always felt like I need a vice. I don’t know whether this feeling is universal, but I have some way-down vibrating part of my subconscious that needs to self-destruct, at least a little bit.