Dear Culinary Backstreets, What and where is safe to eat in Mexico City? We’ve heard horror stories from other travelers about “Montezuma’s Revenge” and would like to avoid getting sick while visiting the city.

In Mexico, sandwiches generally come in the form of the torta, usually made out of a white bread roll known as a bolillo that has been sliced in half and then filled to the brim with meat, avocado, tomato, onion and sliced jalapeño peppers. In Mexico City’s San Rafael neighborhood, however, a family-owned sandwich shop called La Vaca de Muchos Colores is doing its best to expand the city’s sandwich scene.

From a country that maintains a “national strategic pork reserve” – vast bunkers of frozen meat that can be released when the price of the commodity gets too high – one might not expect to find an impressive number of traditional vegetarian restaurants, but you’d be surprised. While exact numbers are hard to pin down in China, it is thought that around 20 percent of the Chinese consider themselves Buddhist, a number that tops out at around 280 million people. In culinary terms, that translates to hundreds of millions of would-be vegetarians – though, as in any religion, devotees interpret tenets at will, and most “vegetarians” in China enjoy a sprinkling of pork in their tofu to “add flavor.”

It is hard to identify exactly when the forgotten neck of Istanbul between Etiler and Arnavutköy became prime real estate. Not so long ago, overgrown green space alongside the road was interrupted by the occasional car wash and low-slung shanty; it was not so much a place as a road to other places. But now it seems this road is going places of its own. A private tennis club with a swimming pool shares a parking lot with Backyard, a café and restaurant with a big grassy yard filled with lounging parents and children wallowing in that rare Istanbul commodity: grass.

To call Tacos & Deli, a one-year-old family-owned spot in the popular nightlife district of Zona Rosa, small would be an understatement. The main dining area contains six little tables, a tiny kitchen, a taco station and a cashier stand, all of which are squeezed into a micro-sized area that in many other restaurants would probably end up being used as a broom closet.

When Yi Sheng Yue Wei opened on Yongkang Lu almost three years ago, its neighbors were pajama-clad retirees, a mahogany furniture workshop and the Shikumen History Museum – which, to be honest, is actually just one history buff’s storied alleyway house. Now the two-block street is one of the most laowai-gentrified in Shanghai, with bars run by French interns, coffee shops stocked with beans from Ethiopia and competing fish-and-chips shops. Rents have skyrocketed, and there’s even talk of transforming the thoroughfare into a pedestrian street. But amongst the hustle, bustle and inebriated foreigners, Yi Sheng Yue Wei remains, loyally serving the same home-style Cantonese food as it did when it first opened.

The perfect burger, or rather the perfect American-style greasy spoon, has long been the holy grail of expats and locals in Athens. There have been a number of places that have gone after the title of the Athenian burger king over the past 30 years, usually in the affluent southern suburb of Glyfada, home to a U.S. military base in the 1980s, but none have had lasting power. The military base has been closed for some time now but the appetite for American diner-style food (the kind popularized in what have traditionally been Greek-owned diners) has not abated in the least. Enter New York Sandwiches, opened less than two years ago near Pyrgos Athinon (pyrgos means “tower”) – the only skyscraper in central Athens – in the busy area of Ambelokipoi. With a menu that includes burgers, bagel sandwiches and Philly cheesesteaks, old-school letter boards hanging above the counter listing what’s on offer, and pictures of New York on the walls, the restaurant works hard to bring a bit of America to the heart of Athens.

We can’t prove it, but we suspect a network of tunnels lies underground in Beyoğlu that connects most of the meyhanes of Asmalımescit and Nevizade Sokak to the same mediocre kitchen, resulting in unexceptional mezes at scores of venues in this dining district. Following a number of tips, our search for a standout meyhane led us to the unassuming Asmalı Cavit on Asmalımescit Caddesi, where we’ve consistently had outstanding food. This traditional meyhane bucks the trend toward mediocrity with subtle but significant tweaks that, for us, make the meal.

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.

Culinary Backstreets’ co-founders Ansel Mullins and Yigal Schleifer recently spent a few days introducing a crew from the CBS Sunday Morning show to Istanbul’s gastronomic underbelly, at one point journeying in a rickety wooden boat on the Golden Horn in order to get to the next meal.

Certain global phenomena, like sushi, the mojito and the sitcom Golden Girls, might have arrived a bit late in Turkey, but as the world scrambles to go local, eat seasonally and connect with traditional culinary roots, Turkey is way ahead of the pack. Gram, chef Didem Şenol’s carefully curated locavore deli in Şişhane, feels perfectly in step with the stripped- down style that chefs from New York to New Zealand are favoring today.

Earlier in 2012, Jing’an Villas – a square, block-sized 1930s-era housing area in the heart of downtown Shanghai – survived an ironic plan that called for permanently relocating all of its 3,000-plus residents in order to better “preserve” the historic neighborhood. Luckily, the plan was shot down in a party committee meeting. For now, at least, Jing’an Villas remains the perfect setting for trying longtang cai, simple, home-style alleyway food that features local favorites.

The arrival of fall in Istanbul usually means one thing for us: hamsi season is about to begin. Hamsi, of course, are the minuscule fish (Black Sea anchovies) that Istanbulites are mad about, and the coming of fall and the cooling of the waters of the Black Sea mark the beginning of the best time of the year to eat the little suckers. In honor of hamsi season, we offer a list of six of our favorite places to try these tiny fish.

In the ’90s, as the first American burger and pizza chains began appearing all over Athens, it looked like the humble souvlaki was not the takeaway or delivery option of choice anymore. Luckily, the past 10 years have seen a huge comeback of souvlaki. Neo-souvlaki places that looked nothing like the greasy joints of the past started appearing all over Athens. The economic crisis has made the return of souvlaki even more poignant: people want cheap, tasty food more than ever, and souvlaki shops are opening up everywhere.

Dinner and a comedy routine isn’t a concept that has caught on in China. A few Sichuan restaurants feature a traditional show with the help of some loud music, a man with a flashy cape, and a mask with many thin layers that changes with a quick, hidden tug. But a Hunan restaurant? Never. At the popular neighborhood joint Hunan Xiangcun Fengwei, however, the finger-licking good food from Chairman Mao’s home province shares top billing with the subtle art of Chinglish menu translations that at first glance seem to defy explanation.