Sauce can be made 1 week ahead. Transfer to an airtight container; cover and chill.
Cochinita pibil is the pride of the Yucatan peninsula—a dish of smoky, slow-roasted pork marinated in a special blend of ingredients including cinnamon, allspice, and achiote (annatto) seed. Cochinita means “baby pig,” and the real-deal recipes use a whole suckling pig. Traditionally the whole thing is wrapped in banana leaves and then buried in a pib—a pit with a fire at the bottom. Here I use Boston butt and employ a two-stage “grill-and-swim” cooking process to make things a little more convenient and a lot juicier. Pregrilling the meat adds great flavor, while low and slow cooking in a water bath produces especially succulent meat—no pib required. Plus, you won’t have to fire up your grill on taco night, so you can focus on making Homemade Corn Tortillas or that sweet playlist you’ve been meaning to put together.