I ate a Big Grab–size bag of Nacho Cheese Doritos pretty much every day for approximately two years in college. Now I only eat them on road trips. They are still so, so good (for something so, so bad). Why?!

They are, of course, specifically scientifically engineered to be that way—with vanishing caloric density, super-fine orange dust-flavor (including romano cheese), three kinds of salt, MSG, a lack of sensory specific satiety, and more.

Related: In praise of MSG, featuring David Chang.