Quesadilla de Chicharrón

The filling here is the part scraped off the bottom of the carnitas pot. Chicharrón prensado is what is left after a big batch of pork is fried down: the small meaty scraps, fat, and bits of skin collected and pressed in a perforated mould into a dense reddish block, somewhere between crackling and carnitas and not the brittle puffed sheet sold for snacking. Folded into a corn tortilla and griddled, it makes a quesadilla whose whole character comes from that pressed pork rather than from cheese. The masa is the frame and the low sweet note; the pressed scrap is the flavour, deeply porky and a little funky from the rendered odds and ends; and the cook's job is to keep that heavy, crumbly mass from eating like a fistful of cold grease.

It does not, because the filling is built before it ever reaches the fold. The block is broken up and warmed into a stew, most often simmered with tomatillo, white onion, and green chile until the pork goes slack and spreadable and the salsa verde soaks through it. That tomatillo acid is the engine of the dish: pressed pork is rich to the point of leaden, and the tart green sauce cuts it so the bite lands savoury rather than greasy. A red guajillo version exists and runs deeper and sweeter, but the green is the one most stands ladle. The stewed meat goes onto a fresh thin tortilla, a melting cheese alongside it to loosen the crumb and glue it to the masa, and the round is folded over.

The failures are specific to a filling this dense. Use cold packaged chicharrón straight from a bag with no sauce and no cheese, and the fold is one flat note of fat sealed in a leathery shell. Skip the tomatillo and nothing lifts the richness, so the quesadilla sits heavy and tastes only of pork fat. Skimp the cheese and the crumb has nothing to hold it, so it sheds out of the fold in a dry rubble the moment the tortilla opens. Press the tortilla too hard on a slack comal and the masa toughens before the centre warms through. A good one balances in the mouth: the pork rich but tart-lifted, the crumb bound in cheese, the masa toasted and giving rather than stiff.

On the comal the smell is rendered pork meeting toasted corn, sharpened by the green tang of tomatillo steaming out of the fold. The tortilla picks up dark freckles across its face as it sits on the dry iron, and the seam darkens where the cook has weighted it. The first bite carries no crackle at all, soft straight through, the pressed pork yielding and savoury, the cheese pulling a short thread, the salsa verde arriving as a green sour edge a beat behind the fat. It eats warm and dense and a little messy, the kind of thing bought at a market stall and finished standing over the wax paper.

At a comal stand the chicharrón prensado sits in its own clay pot among the row of guisados, beside the tinga, the rajas, the potato and the squash blossom, and the customer names it off that line. In the center of the country it is a staple of the morning market and the quesadilla-and-gordita stall, where the same pressed pork stuffs both. Whether the cook reaches for the dry pressed block folded in plain or the soft guisado swimming in green sauce is the choice that defines the order, and most who know to ask want it en salsa verde, wet and tart, because that is the version the dense pork was built to need.

Its near neighbours fork off by filling and by sauce. The same masa fold around shredded carnitas keeps the pork but loses the pressed-scrap funk and the binding problem it brings. A chicharrón filling in red guajillo rather than green is the same dish under a sweeter, smokier sauce. The brittle puffed chicharrón snapped over a tostada is the crackling in its dry form and a different texture entirely. What stays particular to this quesadilla is the pressed-and-stewed pork, almost always green-sauced, bound in cheese inside a corn fold.

Origin of the filling

The quesadilla is old and undated, but the filling has a clear industrial logic. Chicharrón prensado is a thrift product of the carnitas and chicharrón trade: when a chicharronería renders a cauldron of pork, the meaty, fatty fragments that fall to the bottom are too good to discard and too irregular to sell as crackling, so they are pressed into moulds and sold as a block. The dish is the leftover engineered into a second product, which is why it belongs to the cheap, central, everyday end of Mexican cooking rather than to any named inventor or town.

The masa fold it lives in is genuinely ancient. The corn tortilla descends directly from the nixtamal grinding that long predates the Spanish arrival, and the act of folding a fresh tortilla over a filling on a hot griddle is older than any of the dish's modern names. The word quesadilla is built from queso, and across much of Mexico cheese is taken as given in one; the chicharrón version is a filled variant of that base form, named for what goes in rather than for the cheese that binds it.

No record fixes a first quesadilla de chicharrón, and none should be invented to fill the gap. What can be stated plainly is the chain it sits in: a pre-Hispanic masa tortilla, a colonial-era pork trade whose fried scraps were pressed into chicharrón prensado, and a tomatillo salsa whose ingredients are native to Mesoamerica. The pig and the chile arrived with New Spain; the corn and the tomatillo were already here, and the dish is where they met on a market comal.