Taco de Verdolagas

Verdolagas grow in the cracks of a yard before anyone plants them, a low creeping weed with reddish stems and thick teardrop leaves that snap with water when you pick them. The Spanish name covers purslane, a succulent that Mexican cooks treat as a quelite, an edible wild green, and the taco de verdolagas is built on that green rather than on meat. Stewed in salsa verde, often with pork, the purslane wilts to a tender, faintly sour braise, and that braise is the filling. The leaves carry a clean lemony tang and a juicy, almost cucumber flesh; the tomatillo sauce sharpens it; the corn tortilla underneath turns a loose, wet green into something you can hold and bite.

The crux is timing the green. Purslane is mostly water held in fleshy cells, and it has a narrow window: pulled from the heat at the right moment the stems keep a faint crunch and the leaves stay vivid and lemon-bright, but a few minutes too long and the whole panful slumps into a gray, slick mush that has surrendered its tang. When pork goes in, the rendered fat rounds the sourness and adds a savory weight the green lacks on its own; the leaner all-vegetable version leans harder on tomatillo and chile and eats sharper. Either way the braise has to be cooked down and drained, because purslane sheds liquid as it wilts and a watery scoop floods the tortilla on contact.

From there the taco is a fast assembly with its own failure modes. The tortilla is warmed on a comal until it flexes and smells of toasted corn, then loaded with a controlled scoop, since a wet green braise turns a thin round limp in seconds and a cold, brittle tortilla cracks at the fold under the weight. Raw white onion and cilantro go over the top for crunch and lift, and a squeeze of lime pushes the sourness up. Overfill it and the soft greens spill from the open side at first contact; underdrain it and the bottom weeps through before you reach the second. The aim is a tight fold, a moderate portion, and a braise dry enough to stay put.

Lean over a fresh one and the smell is green and tart, wilted purslane and tomatillo with the toasted-corn note of the warm tortilla under it. The first bite gives the soft flex of the corn, then the leaves arrive slippery and yielding with that lemon-sour snap, the stems holding a faint vegetal crunch where the cooking stopped in time. If pork is in the braise it lands savory and soft between the greens, the fat smoothing the acid; the salsa verde keeps a bright sting at the edges, the raw onion cracks cold against the warm filling, and the lime sharpens the whole mouthful. It eats juicy and herbaceous and unmistakably of a cooked green, a vegetable taco that tastes like the plant it is made from.

The green keeps the rains. Purslane comes up wild through the wet months across central Mexico, and the taco belongs to that season and to the home kitchens and market stalls that cook quelites the way other cooks cook spinach, by the kilo and by habit. In the markets of the central valley a cook keeps the stewed verdolagas in one pot along the row of the day's guisados, ladles them to order, and a buyer asks for the green by name. It is everyday cooking with a forager's frugality behind it: a plant that costs nothing and grows where it likes, treated as food rather than as a weed to be pulled.

Close relatives sort by the green in the pot. Cook the verdolagas long with pork and let the meat take the lead and the dish turns rich and rounder, the green dropping to a supporting role. Swap purslane for nopales and the texture goes from succulent to a snappy, faintly mucilaginous bite, a different vegetable taco entirely. Trade it for romeritos, the rosemary-like quelite of the holiday table, and the season and the flavor both move. What holds the taco de verdolagas to itself is the specific green: a wild succulent with a lemon tang that no cultivated leaf in the Mexican kitchen quite copies, wilted in salsa verde and folded into corn.

A Weed from the Old Larder

Purslane is one of the oldest greens any kitchen knows, and Mexico's claim on it runs deep. The plant belongs to the category of quelites, from the Nahuatl quilitl, simply edible plant, and it carried its own Nahuatl name, itzmiquilitl, in the kitchens of central Mexico long before the conquest. Mesoamerican cooks gathered and ate it as part of a wild-greens tradition that reaches back into the pre-Hispanic diet, and that tradition is unbroken in the central states that still cook it today.

The plant itself is genuinely ancient and genuinely everywhere, which is why no kitchen can claim to have invented the taco. Portulaca oleracea grows wild across six continents and has been eaten from the Mediterranean to South Asia for millennia, one of the richest plant sources of omega-3 fatty acids known. What makes the verdolagas taco specifically Mexican is not the plant but the treatment: the tomatillo salsa verde, the comal-warmed corn tortilla, and the pork that central Mexico, and the state of Puebla in particular, braises with the green as a regional specialty.

The green's place in that diet is documented, even if the taco's first making is not. The Nahuatl name for purslane, itzmiquilitl, survives in the town of Ixmiquilpan in Hidalgo, whose name means place of the purslane, and the green this taco folds into corn is the same wild succulent that named the town. The record is older than the colony: Ixmiquilpan appears in the tribute rolls of the Codex Mendoza, the Aztec codex compiled around 1541, drawn with a glyph of the purslane plant itself.