Mexican cuisine is UNESCO-listed intangible heritage, and eating your way across the country is a trip in itself. Corn, chiles, beans and lime are the base notes; every region builds its own repertoire on top: Yucatan's achiote pork, Oaxaca's seven moles, Jalisco's birria, Guerrero's pozole.
The taqueria is the classic eatery: standing-room tacos from the trompo or the grill, late into the night. Fondas serve the comida corrida, the fixed-price lunch that is the country's great bargain. Markets are the soul of regional cooking: go hungry and follow the crowds.
Etiquette: greet when you arrive, tip 10 to 15 percent in restaurants, and say provecho to neighbouring diners.
Mexican cuisine has enormous regional variety. Below are the essential dishes.
Mexico's 32 states each cook differently. The highlights by state:

OaxacaOaxaca
The land of the seven moles: tlayudas, chapulines, chocolate and mezcal.

The WestJalisco, Michoacan, Nayarit, Colima, Guanajuato, Queretaro, Aguascalientes, Zacatecas, San Luis Potosi
Birria, tortas ahogadas, pozole and tequila country: Jalisco, Michoacan and the Bajio.

The NorthBaja California, Baja California Sur, Sonora, Chihuahua, Coahuila, Nuevo Leon, Tamaulipas, Durango, Sinaloa
Carne asada, cabrito, flour tortillas and Pacific seafood from Baja to Tamaulipas.

Agua fresca
Fruit waters, especially horchata (rice) and jamaica (hibiscus).

Mezcal
The smoky agave spirit of Oaxaca, sipped neat with orange slices and sal de gusano.

Tequila
The blue-agave spirit of Jalisco; look for 100% agave on the label.

Pulque
The fermented agave drink of the highlands, served in pulquerias.

Michelada
Beer with lime, salt, chile and sauces, the beach-day classic.

Cafe de olla
Coffee brewed with cinnamon and piloncillo in a clay pot.