In recent years, downtown Mexico City’s once grimy Centro Histórico has undergone a remarkable transformation. The government and private enterprises have invested in new infrastructure, pedestrian walkways, parks, hotels and high-end apartment buildings that give the area the look and feel of a district that is part of a modern, dynamic capital city.

The word mole comes from the Nahuatl molli, which means “mixture,” and is used to refer to a number of sauces prepared all over Mexico. There’s some controversy as to which spot is the birthplace of mole (Puebla, Tlaxcala and Oaxaca all claim the prize) and when exactly these sauces were created. What we do know about mole sauces, however, is that they are the perfect culinary example of the mestizaje that took place in Mexico after the arrival of the Spanish conquistadores. They combine native ingredients such as chilies, fruits and seeds with elements brought by the newcomers, including nuts, exotic fruits and even bread.

Among the regions of Mexico that are best known for their culinary wealth, Puebla is near the top. Approximately 100 kilometers east of Mexico City, Puebla is the birthplace of chiles en nogada, mole poblano (probably the most recognized Mexican mole worldwide) and cemitas, a knockout sandwich made with the bread of the same name.

Set up along Bucareli, just south of Reforma – two of the city center’s core arteries – only after dark, there is a steady huddle that gathers under a yellow tarp around steam and light bulbs.

There’s a funny feeling you get in Mexico City when you come back to a neighborhood you both remember and forget. Food here gets that way, too. “You know that one quesadilla joint, that one time, with the good salsa.”

As we mentioned in our piece about Rosca de Reyes, February 2 is an important date in the Mexican calendar - for Candlemas and, relatedly, for tamales. True, tamales are one of the most popular foods in Mexico City, and we can find all kinds of reasons for eating them any day of the week. But this day commemorates a ritual visit Mary made to the temple in Jerusalem with the baby Jesus. In the Catholic Church and Orthodox traditions, February 2 is the Feast of the Presentation of the Lord, and at one time, the candles used in services in church throughout the year would be blessed that day, hence the name Candlemas or Candelaria. Native Mexicans would celebrate the planting this time of year with a big feast that would include tamales, and the indigenous and Christian traditions became linked.

There’s something limitless about tacos in Mexico. All you need for a good taco is a soft corn tortilla – handmade are a plus – and a filling, which can take the form of meats such as al pastor, carnitas, mixiote, fish, vegetables and, lesser-known outside of Mexico, guisados.

Editor’s note: The year is coming to an end, which means it’s time for us to look back on all the great eating experiences we had in 2014 and name our favorites among them. Tacos el Patán This hole-in-the-wall eatery is located in one of the busiest commercial sections of downtown Mexico City. We found it one day while we were shopping for stuffed animals and have since returned several times. El Patán is open every day but only serves fish tacos, the best item on their menu, on Wednesdays, Fridays and Saturdays. Those days they also offer skewered shrimp and deep-fried fish quesadillas made with the same fish as that used in the tacos. The rest of the week, the taquería prepares cecina (salted beef), chicken, suadero (brisket), al pastor and longaniza (a type of sausage) tacos. But the fish taco – made from barracuda, no less – was the best of its kind that we had this year.

In Mexico, small business owners and entrepreneurs often display high levels of ingenuity. Take the case of El Vilsito, a taquería in the Narvarte neighborhood that does double duty as an auto repair shop.

In November, the Conservatorio de la Cultura Gastronómica Mexicana held its second International Mexican Gastronomy Forum in the city of Puebla, about 100 kilometers east of Mexico City. We had the opportunity to attend and learn more about the importance of creating this kind of space to preserve and propagate Mexican recipes that have been cooked for thousands of years.

Mexican sweets might not be as world-famous as those from the U.S., France or Switzerland, but judging by the enormous variety of pastry, candy and chocolate made and consumed domestically, Mexicans have an insatiable sweet tooth. And chocolate, of course, is one of Mexico’s gifts to the world.

There’s more to downtown D.F. than tourist attractions, however. It is the cultural, political and economic heart of the city and the country. Any item imaginable can be bought downtown. There’s the lighting district as well as one for appliances, clothing, electronics, printing and a long list of others. For generations, people have been going there to buy by the piece or wholesale to supply small businesses all over the country.

In Mexico, the land of eternal spring, something good to eat is always in season. We ravenously await the arrival of artichokes in March, mangos in April, fresh corn in September. Even the wriggly little gusanos de maguey (maguey worms) which appear in May are wildly anticipated – by some. Change in season is subtle here, but essential to the survival of the country. But seasonal lines are blurring. Asparagus rears its tasteless Chilean head all year; pallid strawberries are found in December. Seasons have gone global and our palates suffer for it. Which is all the more reason to pay attention to what’s local now. From July into October, coinciding with our temporada de lluvia, wild mushrooms, spurred on by rain and humidity, hit the markets of central Mexico. Here in the capital, the month of August is high ‘shroom time.

Editor's Note: Sadly, this spot is now closed. Mexico City’s Centro Histórico is never a dull place. Combined with the massive crowds and the constant roar of honking horns, passing buses and shouting vendors, the sheer visual stimulus is enough to make one weak in the knees after an hour or so. It can be a huge relief to step off the street for a breather and a bite to eat – although, in the case of Cafetería El Cuadrilátero, whose name can be translated to “wrestling ring cafeteria,” a “bite” is quite an understatement.

In the U.S., chimichangas and burritos are always associated with Mexican food, but in the central part of Mexico those words don’t mean a lot. In Mexico City, specifically, it’s very hard to find burritos that resemble those found north of the border, and the word “chimichanga” doesn’t even exist in our vocabulary.