Burrito de Chile Verde

Pork shoulder goes into a pot of blended tomatillo and roasted green chile and comes out an hour later shredded and stained pale green, and that tart braise is what the burrito is really carrying. Chile verde, in its northern Mexican reading, is meat simmered in a sauce of tomatillos and green chiles, the serranos or jalapeños roasted and peeled, blended with cilantro, onion, and garlic into a bright, sour, herb-heavy gravy. Rolled into a warm flour tortilla, that stew becomes food eaten on the move. What the first bite gives is not heat but a clean lemony tang, the tomatillo's acid cutting across the soft fat of the pork. The pork brings the body and the give; the green brings the sourness and the moisture; the wheat wrap holds a deliberately wet braise in a shape a hand can manage.

The sauce is won at the tomatillo. Raw, the fruit tastes thin and sharply grassy; roasted or boiled until the husked pods slump and dull from bright to olive, it rounds out and turns savory while keeping its tang. The green chiles are charred and peeled and go into the blender with the tomatillos, the cilantro, the onion, and the garlic, and the sauce should taste assertively sour on its own before any meat touches it, because the pork will soften and absorb that edge as it cooks. Underseason the green and the finished braise reads flat and fatty; blend the tomatillos raw and it stays harsh and watery. The pork, browned first and then simmered down until it pulls apart, thickens the sauce as its gelatin renders, so the green clings to every shred instead of pooling loose in the pot.

As with any wet filling in wheat, the structural enemy is liquid at the seam. The braise has to be lifted from the pot well drained, the loose sauce left behind, so the tortilla is wrapped around a moist but not soupy core; a spoonful of pot liquor too many and the wrap softens and splits before the second bite. The flour tortilla should come warm and supple straight off the comal, rolled firm around a tight center with the ends folded in so nothing runs out the bottom. The fold is the quiet skill: packed too loose the burrito sags and leaks, rolled too tight the tortilla tears under the weight. Done right it holds clean to the hand, juicy through the middle and dry along the seam, the green braise staying put where it belongs.

Cut one open and the steam comes up sharp and herbal, sour tomatillo and roasted chile and cilantro rather than anything deep or sweet. The wheat wrap is warm, faintly charred in spots from the comal, the pork soft and pale and soaked through with green, the sauce going sticky on the fingers at the fold of the wrap. The first bite resists faintly at the wheat, then the braise breaks across the tongue all acid and herb and slow chile warmth, the heat from the serranos building low rather than hitting hard up front. It tastes green and alive in a way a long-cooked stew rarely does, the lime-bright edge of the tomatillo carrying right through the richness of the meat to the end of the bite.

You order it by the sauce, not the trimmings. In flour-tortilla country a cook who hears de chile verde knows exactly which pot you mean, the green one, as opposed to the red, and the burrito comes filled with that braise and little else, the sauce standing as seasoning, meat, and moisture in one. Its near relatives sort by exactly that choice of pot. Build the same idea from dried red pods instead of fresh green ones and it becomes the burrito de chile colorado, deep and faintly sweet where this runs sharp and bright. Carry the green reading into New Mexico, where the roasted Hatch chile tends to stand on its own rather than ride a tomatillo base, and it shifts into a regionally distinct green-chile burrito. Open one out flat, flood it with the same green sauce under a blanket of melted cheese, and set a fork to it, and it has become a smothered plated dish on different physics, no longer a thing the hand carries.

The green sauce and the northern wheat

The braise inside this burrito rests on a sauce far older than any tortilla wrapped around it. The green base, salsa verde of tomatillo and green chile, traces to the cooking of central Mexico before the conquest, and the tomatillo turns up in the first European survey of New Spain's plants, the expedition the physician Francisco Hernández ran across the peninsula between 1571 and 1577. The fruit itself was domesticated in Mesoamerica thousands of years earlier and reached Spain after contact, where it was confusingly filed under the name tomate, the green husk-fruit and the red one tangled in European naming from the start.

The wheat is the northern part of the story. Flour tortillas became the everyday bread of Chihuahua, Sonora, and the borderlands in a way they never did in the corn country farther south, which is why a burrito wrapped in wheat is a northern and border format rather than a central Mexican one. Pairing an old central-Mexican green braise with the north's own flour flatbread is what produced this burrito, a meeting of two long-standing staples rather than an invention with an author.

No cook, town, or year can claim the burrito de chile verde, and the honest anchor is the sauce, not the sandwich. The green salsa it carries reaches back into central Mexican cooking through the Hernández survey of 1571 to 1577 and rests on a tomatillo domesticated in Mesoamerica millennia before any European wrote it down, while the flour tortilla around it is the staple bread of the Mexican north, the two laid together by hands no record names.