Iron comal: what it is and how it is used in the kitchen

What is it?

The iron comal is the industrial evolution of the traditional clay comal, now found in practically every Mexican kitchen, domestic and professional alike. It consists of a flat or slightly concave disc of cast iron or steel, usually with handles, heated on a gas hob, electric grill or embers. Its ability to retain heat and withstand intensive use has made it an indispensable companion in tortillerías, taquerías and fondas, where it is used to cook tortillas, quesadillas, roasted chillies, tomatoes, tlayudas and steaks. Although it lacks the earthy notes of clay, the iron comal makes it possible to cook large volumes efficiently. It is seasoned with oil to create a natural non-stick layer and, well maintained, lasts for decades, becoming a family utensil passed down through generations.

Origin and history

The iron comal appeared in Mexico during the nineteenth century with the arrival of industrial steelmaking technology, but only became widespread in the twentieth century, as Mexican households moved from the wood-fired hearth to the gas cooker. The transition was gradual: it was adopted more quickly in the centre and north of the country, while in the south (Oaxaca, Chiapas, Yucatán) and in rural areas the clay comal remained dominant. Lodge-style cast iron comales (in the American style) and Mexican welded-steel comales differ in thickness and weight. In the twentieth century, Mexican brands such as Vasconia, Cinsa and Ekco produced affordable steel comales that became standard in urban kitchens. Today they coexist with modern stainless steel versions, industrial non-stick models and heavy iron plates for professional kitchens. Larousse Cocina and various sources document that the iron comal did not replace the clay one: both coexist depending on the preparation.

Characteristic ingredients

Iron comales measure between 30 and 50 cm in diameter; they are usually round, though oval and rectangular versions are also made for industrial cookers. Cast iron (Lodge-style) is 5-8 mm thick, weighs several kilos and retains a great deal of heat; it is ideal for cooking with constant, low-to-medium heat. Mexican welded steel is thinner (2-4 mm), lighter, heats up quickly but loses heat easily. Before first use they must be seasoned: wash with soap and water, dry completely, rub with a thin layer of vegetable oil and heat until the oil smokes; the process is repeated 2-3 times to build up a non-stick layer. After each use they are cleaned without soap (just hot water and a cloth, or coarse salt to scour off residue) and rubbed with oil to preserve the protective patina. Rust is the iron comal's enemy: it must never be left damp. Quality is judged by the evenness of the surface, its thickness and its resistance to warping.

Cultural significance

The iron comal is a fundamental element of contemporary Mexican cooking, present in urban homes, fondas, taquerías and restaurants. Although more recent than its clay counterpart, it has earned its place as an indispensable working utensil. In the family kitchen, an inherited comal passes from mothers to daughters, the patina built up over the years considered part of its sentimental value. In Mexican tortillerías, large industrial comales turn out thousands of tortillas a day, underpinning the country's food economy. At street taquerías, the comal smokes over charcoal at the front of the stall, its aroma calling in the customers: tacos de carne asada, tlacoyos, gorditas, sopes and quesadillas are cooked before the diner's eyes. Although the traditional Mexican cuisine recognised by UNESCO in 2010 highlights the clay comal as a heritage utensil, the iron comal is the modern face of the same knowledge: cooking with dry heat, a fundamental technique of the Mexican table.

Frequently asked questions

What is the difference between an iron comal and a clay comal?

The iron comal retains a great deal of heat, is indestructible and withstands intensive use, making it ideal for everyday high-temperature cooking. The clay comal is porous, gives tortillas an earthy flavour and is considered the traditional method. Iron is practical and efficient; clay brings authenticity and nuances impossible to replicate industrially.

What does a tortilla cooked on an iron comal taste like?

It tastes of toasted maize, lightly golden at the edges, with a uniform texture. It does not contribute earthy notes the way clay does, but it reaches higher temperatures, producing a well-cooked tortilla in less time. Roasted chillies and tomatoes develop the charred skin prized in tatemada-style salsas, a hallmark of iron's intense heat.

How do you season a new iron comal?

Wash it with warm water and soap, then dry it completely. Rub a thin layer of vegetable oil over the whole surface and heat until it smokes lightly; the oil polymerises, creating a non-stick layer. Repeat 2-3 times. After each use, clean it without soap (just hot water and a cloth, or coarse salt) and oil it lightly to maintain the patina.

Where does the iron comal come from?

The iron comal as an industrial utensil arrived in Mexico during the nineteenth century with European and North American steelmaking. Mexican brands such as Vasconia, Cinsa and Ekco have produced steel comales since the twentieth century. Similar utensils exist in Asian kitchens (woks, flat plates) and American ones (griddles), but in Mexico it was adapted to the specific work of tortillas and criollo-style grilling.