The name comes from "sorullo," slang for a rolled-up bundle, describing the fritter's cigar-like shape long before anyone standardized a written recipe.
A sweet cornmeal dough is wrapped around a core of melting white cheese, rolled into short logs, and deep-fried until crackling outside and gooey within, served at beach kiosks with a garlic-mayo-ketchup dip.
Why it's made this way: Sorullitos are a fixture of Puerto Rico's beachside kiosko strips, especially the famous row of kiosks at Luquillo, where fried snacks built the island's beach food-truck culture.