Pepsi asked consumers to blind-taste-test Pepsi vs. Coke; most preferred Pepsi. But Coke maintains its high market share partly because when people are asked to nonblindly taste Coke and Pepsi (as they always do in the real world) people prefer Coke.

I prefer Coke, and always taste nonblindly. It's time for some soda science.

Some years ago a dentist recommended diet cola, and now I don't think I could enjoy the syrupy sweetness of a regular soda, but I always enjoy a Diet Coke, especially from a fountain. When a franchise only carries PepsiCo products, I'll have a Diet Pepsi, but I've never tasted them side by side.

Preregistration details:

I'll start with a non-blinded taste test, trying to see if I prefer one drink or the other when I know what they are. At least one day later, I'll try the two covered cans to see which one I prefer and whether I can tell which is which.

If I have enough patience to wrap more cans I'll mix them together in the fridge and pick two at random and see if I can identify them by taste. Will report back.

related: