When I posted about cacio e pepe recently, I didn’t realize I was headed down a rabbit hole. I like this dish—pasta with pecorino romano and black pepper—but I’m not obsessed with it. Then I discovered someone who is. Her Instagram, cacioepepelove, has 6,600 followers and climbing. I took one look and couldn’t stop looking. Every day, a new cacio e pepe. Who was behind this funny, mouthwatering, passionate love letter to a pasta dish?