Chile loco: the crossed chilli of Guerrero

What is it?

Chile loco is a regional variety little known outside Guerrero and Oaxaca, where it is used as an ingredient in traditional salsas and stews. It receives its name for being a natural cross between different varieties of Capsicum annuum, which causes the plants to produce heterogeneous fruits in size, shape and even heat: 'loco' (mad) means precisely that it does not respond to a uniform pattern. It mainly grows on the Costa Chica and in the central sierra of Guerrero, as well as in adjoining areas of Oaxaca. Its intensity ranges between 10,000 and 20,000 Scoville units, hotter than the jalapeño but milder than chile de árbol. It is used fresh or dried for regional salsas, Guerrero green mole, pickles and country stews. Although its production is marginal, rural communities continue to grow it as part of their family agricultural heritage and the diversified milpa system.

Origin and history

Chile loco is the result of cross-pollination between different criollo varieties of Capsicum annuum grown in family gardens of the Sierra Madre del Sur. This genetic diversity is a common phenomenon in areas where several native chillies coexist without agricultural separation, and Guerrero peasants have used it for generations as a 'multi-purpose' chilli. Although it does not appear in classic colonial recipe books, the ethnobotanical inventories of INAH and CONABIO document its continuous use in the peasant cooking of the Costa Chica of Guerrero and the Oaxacan Mixteca. The Amuzgo, Mixtec and Nahua peoples of Guerrero have kept this chilli as part of the traditional milpa, where it is grown alongside maize, beans and squash. CONABIO includes it in its inventories of Mexican criollo Capsicum as a representative of the genetic diversity of the chilli still preserved in traditional cultivation systems, considered a priority plant genetic resource.

Characteristic ingredients

Chile loco does not have a uniform morphology: on the same plant small fruits similar to the chiltepín can appear, others more elongated like the serrano and some fleshy like the jalapeño. What unites them is their flavour: earthy, slightly fruity and with a medium to high heat that surprises by its variability even within the same shrub. It is used green and red ripe, and to a lesser extent dried. In regional kitchens it is ground in a molcajete with green tomato, garlic and salt to accompany the classic Guerrero green mole; it is added to nejo tamales, chicken broths and stews with purslane. In the Oaxacan Mixteca it is included in salsas for goat barbacoa and in homemade pickles with vinegar and oregano. Its heterogeneous character makes it unpredictable, so traditional cooks always taste before adding, adjusting the quantity according to the heat the particular batch shows.

Cultural significance

Chile loco represents an emblematic case of the genetic diversity of the Mexican chilli and the peasant cooking of the Sierra Madre del Sur. It is part of the milpa system, which UNESCO recognises as an outstanding example of traditional agroecology. Its preservation is linked to the work of Amuzgo, Mixtec, Nahua and Afro-Mexican communities of the Costa Chica of Guerrero, where the chilli is part of family self-consumption and exchange in local markets such as those of Tlapa, Ometepec and Chilapa. CONABIO includes chile loco in its inventories of vulnerable criollo varieties and promotes its in-situ conservation alongside other native chillies. Although it lacks the media recognition of the habanero or chile de árbol, chile loco is a living witness to Mexican biocultural wealth and to the adaptive capacity of indigenous agricultural systems, which have continuously maintained Capsicum biodiversity for thousands of years.

Frequently asked questions

Why is it called chile loco?

The name comes from the heterogeneity of its fruits: on the same plant chillies of very different sizes, shapes and heats grow, behaving 'madly' or unpredictably compared with uniform varieties. This variability is the result of natural crossing between different criollo chillies grown together in family gardens of the Sierra Madre del Sur, without separation.

How spicy is chile loco?

Its heat ranges between 10,000 and 20,000 Scoville units, comparable to the serrano chilli or slightly higher. However, due to its genetic heterogeneity, fruits from the same plant can be much hotter or much milder. Traditional cooks always taste before adding it to a salsa or stew to avoid surprises in the final result.

Which dishes use chile loco?

It is a key ingredient of Guerrero green mole, where it provides heat and aroma. It is also used in molcajete salsas, Guerrero nejo tamales, chicken broths, stews with purslane, homemade pickles with vinegar and oregano, and Mixtec goat barbacoa. It is typical of the peasant cooking of the Costa Chica of Guerrero and the Oaxacan Mixteca.

Where is chile loco grown?

It is grown in family gardens of the Sierra Madre del Sur, mainly in Guerrero (Costa Chica, central sierra, regions of Tlapa and Ometepec) and in adjacent areas of Oaxaca, such as the upper and lower Mixteca. It is a chilli for self-consumption rather than for market, present in milpa systems of Amuzgo, Mixtec, Nahua and Afro-Mexican communities.