When we picked up a cab from Meşhur Unkapanı İMÇ Pilavcısı recently, it turned out the driver had just been there for a refuel himself. Sensing a captive yet interested audience, he held forth all the way to Beyoğlu about where to eat well and cheaply – without stomachaches ensuing – in Istanbul. We’re always happy to discuss the finer points of kuru fasulye (stewed beans), but this driver seemed to have a particularly deep interest in the subject. After debating the merits of various canned brands (“Yurt” brand or nothing, in case you were interested), he dived into the subject of soup.

Editor’s note: We regret to report that Bai Jia Qian Wei has closed. Mention Anhui to most Shanghai residents, and you’ll most likely get a response along the lines of, “My āyí is from there.” Migrant workers from Anhui, one of the country’s poorest provinces, flood into Shanghai tasked with building the city’s skyline, massaging the clenched shoulders of white-collar workers and washing our dishes. Despite the fact that the province is the source of a third of all of Shanghai’s migrant workers – and that its cuisine ranks among China’s Eight Culinary Traditions – Anhui food isn’t held in the same regard as Sichuan or Cantonese by Shanghai gourmets.

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.

Not far from the Gràcia neighborhood’s glittering Paseo de Gràcia can be found a completely different world of narrow, unassuming side streets. Once populated by Catalan Gypsies, the area is fondly remembered as one of the cradles of rumba catalana, a popular fusion of flamenco, mambo and rock and roll, and as the birthplace of Antonio “El Pescaílla” González, a legendary flamenco guitarist who was one of the genre’s founding fathers.

Southeastern Turkey’s culinary mecca of Gaziantep is best known for its baklava and kebabs. But lately we’ve been thinking that it's soup that may actually be the city’s real crowning glory. Not just any old soup, mind you, but beyran çorbası, a stupendously delicious lamb-based broth that is usually slurped down for breakfast in Gaziantep.

It’s two in the morning at Wangji Chaozhou, a rice porridge (粥, zhōu) restaurant in Changning that stays open till 5 a.m. – late even by the standards of restless Dingxi Lu, a bustling, neon-lit thoroughfare close to several college campuses. The waitress on duty is either suspicious by nature, or made more so by her late-night schedule. She regards us impassively, unwilling to let the slightest flicker of amusement disturb her bored demeanor.

It’s not every day that you find a former national volleyball champ in the kitchen, but that’s just the case with Lu Dajie (aka “Big Sister” Lu) and her eponymous restaurants. After a successful career with the Chinese military’s volleyball team, followed by years working in restaurants for others, she left her hometown of Jianyang in Sichuan province with her brother, bringing her region’s famous cuisine with her. Now, in Shanghai, she is slowly building an empire.

There wouldn’t be much of a revived culinary scene in Mexico City without chef Ricardo Muñoz Zurita. A kind of recipe detective and writer of several well-regarded Mexican cookbooks, including the superb Diccionario Enciclopédico de Gastronomía Mexicana, he has been even more successful in his restaurant ventures. After his humble Café Azul y Oro at the National Autonomous University of Mexico (UNAM) received rave reviews, he expanded on its concept – a menu of traditional regional Mexican cuisine based on sometimes forgotten recipes he had gathered through his field research – by opening a larger restaurant in the hip Condesa neighborhood in 2010. Two years later, he opened a third location in a beautifully restored building in the Centro Histórico, which has proven to be his most successful venture yet.

Forget about Christmas. In Greece, Easter is the main event, one where food, naturally, plays a starring role. It is also very much a holiday celebrated in the countryside: most Athenians go back to their villages during the holiday to be with their extended family and enjoy the Easter-related culinary delights of their home region.

Dear Culinary Backstreets, I’ve been hearing a lot about shark fin soup in the news lately, from countries banning the dish to people protesting government intervention. What’s all the fuss about? Imagine a wedding without Champagne. No popping corks, no celebratory toasts, no drunkenly giddy bridesmaids. Sounds like a nightmare, right? Shark fin soup is the Chinese equivalent of bubbly – only fermenting grapes has little effect on the environment, while the practice of “finning” has seriously jeopardized the survival of some species of this ancient fish. To harvest the goods, fisherman chop off a shark’s fins, then dump the still-living creature back into the water. Without its fins, the shark cannot swim and either sinks to the bottom of the ocean, where it drowns, or is eaten alive by other predators.

One of our favorite markets in Mexico City, Mercado Jamaica is a fantastic destination any time of the year, offering everything from festive Christmas decorations to a large selection of fruits and vegetables. After the markets of Xochimilco, Jamaica is also one of the city’s best flower markets, with block-long aisles filled with freshly cut flowers and plants of almost every imaginable color and type. But as much as we love getting lost in the sweet scents of these green alleyways, what keeps us coming back to Jamaica is El Profe, an excellent eatery inside the market that specializes in barbacoa. El Profe ("The Prof") looks less like your typical market food stand and more like a mini restaurant, with small brass chandeliers hanging from the ceiling that provide more in the way of ambiance than actual light. Waiters and cooks in matching blue uniforms hustle and bustle around the customers, who come and go from the counter at a steady pace.

Dear Culinary Backstreets, I’ll be in Spain during the December holidays and I’m wondering if Barcelonans eat any special meal on Christmas? If so, what is it and where in the city could I try it?

There is literally nothing like a bowl of steaming má là tang (麻辣烫) when Shanghai’s wet, cold winter sets in. In English, it translates to “mouth-numbing spicy soup,” and if that weren’t indication enough that it will get your sinuses going, then the fire-engine-red broth certainly is.

There is often some confusion when it comes to the many varieties of dumplings in Shanghai. The city’s most famous snack, xiǎolóngbāo, is a soup dumpling that neatly encases its broth inside a thin dumpling skin. It is not, as many first-time visitors assume, a dumpling floating in soup. For that, we turn to the humble wonton soup.