Dear Culinary Backstreets, I keep hearing buzz about “yangmei” season in Shanghai. What’s all the fuss about this fruit? What’s in a name? Shakespeare could just as easily have written, “A yángméi (杨梅) by any other name would taste as sweet.” This little red Asian fruit has a plethora of monikers: Myrica rubra, Chinese bayberry, yamamomo, Japanese bayberry, red bayberry and waxberry. But a decade ago, the sweet and sour fruit was rebranded as the yumberry in the United States (where it is sold in juice and powder form, but not fresh, due to an import ban on the live fruit) to stand out from other exotic “superfoods.”

Ramadan fasters in Istanbul may not love the endless daylight hours in summer nor the susuzluk (no water), but when the reward is a leisurely iftar under the trees on Kadinlar Pazar, the pedestrianized market known as Little Siirt (named after the southeastern Turkish city where many of the local shop and restaurant owners hail from), it must surely seem worth it. A February iftar would not be quite the same, at least not in Turkey. As we walked through the twilight to Siirt Şeref Büryan Kebap Salonu at the end of the square last Saturday, hundreds of fasters waited in front of cling-filmed plates of iceberg lettuce and ciǧ köfte for the Ramadan cannon to signal “breakfast” time.

The sound of bombs has become an all too frequent occurrence in Istanbul as of late, and residents of the city's Cihangir neighborhood were spooked as ever when an explosion occurred in a building overlooking the main square early on a recent Sunday morning. Blasts sound no less scary when they are the result of gas leaks. When the smoke cleared, 75-year-old Feridun Yükseltürk was found crushed under the fallen rubble, just steps from the spot where he sold simit from a cart daily for the past six years. The tragedy sent shockwaves through Cihangir, where Feridun was a beloved figure renowned for his unwavering generosity.

Thessaloniki, the capital of Greek Macedonia and the country’s second largest metropolis after Athens, 500 km to the south, is a youth-loving, vibrant city that never sleeps – and always eats. Most locals here are friendly, laid-back, natural-born foodies who love going out and enjoying good wine and tsipouro. It’s a city with a very long history of culinary hospitality. Founded by King Cassandros in 315 BC and named after Thessalonike, his wife – half-sister of Alexander The Great – it’s referred to by Greeks as symprotevousa, “co-capital,” because of its historical status as a co-reigning city of the Byzantine Empire, along with Constantinople. In 1492 the city welcomed a large number of Jews expelled from the Iberian Peninsula.

“I’m a vegetarian – what will I eat in Mexico other than beans and rice?” Taco-madness has so consumed the world’s view of Mexican cuisine that the traditional mainstays of the diet often don’t get the billing they deserve. Beans, corn, squash, chilies and tomatoes are grown together in milpa farms – a biodynamic system of agriculture. Anyone who has ever grown anything knows: if you let a garden grow naturally, you’ll have an abundance of leafy greens that most of us call “weeds.” Well, in Mexico, nothing edible goes to waste. Just as every bit of meat from an animal is used, so are those weeds and all the other tender leafy bits.

The warren of streets surrounding the current Tsukiji Market – Tokyo’s main wholesale market – are filled with sushi joints, ramen stands, coffee shops and assorted other restaurants tucked between the stalls and knife makers. Walking around during morning hours one could often wonder where the people who work inside the market have their meals. The gentrification of Tsukiji has brought such an influx of tourists that the early market is now closed to outsiders. Visitors are limited to the outer parts of the market and the food stands. Restaurants are jammed. Beginning at 3 a.m. workers drift into the heart of the market and begin to set up for the 5:30 a.m. tuna auction.

Mexico’s Yucatán Peninsula was home to some of the most important Maya cities during pre-Hispanic times. One can still get a glimpse the glory of those cities in ruins such as at Chichen Itza, considered one of the seven wonders of the modern world. On the ruins of a smaller Mayan city, T’ho, the Spanish conquistadors founded Mérida in 1542; since then, the city has been the economic, cultural and gastronomic center of the Yucatán Peninsula. We visited the city recently and fell in love immediately. Thanks to its proximity to the harbor of Puerto Progreso and the importance of the henequen industry – which turned the fibers of a native agave plant into rope – Merida’s culture, economy and architecture grew dazzlingly from the 19th through the early 20th century.

Lisbon’s tiny Taberna da Rua das Flores is almost always crowded, with barely enough room for staff to explain (and often translate) to hungry clients the dishes chalked up on its only blackboard menu. With around 10 marble-topped tables in a narrow, vintage-style eatery that takes no reservations, its small scale and increasing popularity makes for a challenging place to serve food – and yet, the staff are always smiling. The restaurant’s original, contemporary take on the forgotten tavern fare of the city, as well as its patient service and shared love of local ingredients, make it well worth the waiting time.

It’s a mid-week spring day in Tbilisi and we have joined Dali Berdzenishvili and her family for a special picnic lunch. There’s a zesty looking spread covering most of a yellow and blue tablecloth: heaps of khachapuri (cheese bread), blinchiki (meat rolls), sliced meats and sulguni cheese, salads, a trademark Georgian dish of pickled greens known as jonjoli, a bowl of strawberries and a few slices of leftover Easter paska cake. For drinks, there are several bottles of semi-sweet red and a bottle of homemade grape juice. Dali says her late husband, Zviad, loved a picnic like this. And it is Zviad who brings them all here – because they are eating next to his grave.

The triangle of Kurtuluş, Feriköy and Bomonti represents an Istanbul on the verge of fading away. Though still inhabited by significant numbers of Greeks, Jews and Armenians, there are more local churches and synagogues than are used by the remnants of those diminished communities. The numerous schools, houses of worship and cemeteries are relics testifying to the cosmopolitanism that once defined this segment of inner Istanbul. Another nostalgic quality of the area is its small-business culture, still thriving, yet on the verge of a major shift.

Carmen and Eduardo’s story could be an allegory for the rise and uh-oh moment of Brazil’s new middle class – except their tale is a real one, one that ends with a really nice savory fried pastel that’s become a midnight munchie hit with their neighbors in Rio’s iconic City of God (Cidade de Deus) favela. The pair’s life together started early; they met when Carmen, now 30, was just 12 years old; moved in together when she was 14; and both converted to evangelical Christianity and married in a church when she was 18. They came to the City of God, well-known from the book and film of the same name, looking for a more economical housing option.

How thrilling to know it’s possible to reach far back into Japan’s gastronomic past merely by visiting Azabu Juban’s Sarashina Horii Soba for a bit of “living history” in the form of a pleasantly simple meal. The Sarashina cooking lineage stretches back over 200 years and is always evident in the shimmering, high-quality plates of buckwheat noodles coming from the kitchen. In 1798, Nunoya Tahei, a Mastumoto City textile merchant famous for his soba skills, founded the Sarashina soba lineage when he was encouraged by Hosina, the local feudal lord, to open a shop making a style of soba popular in the Japanese Alps area of Nagano.

It must be one of the world’s oldest cheeses, it’s certainly one of the most famous, and it’s practically never missing from a Greek table, no matter the time of day. A person might grab a chunk of this chalk-white substance for breakfast, crunch through layers of feta-stuffed phyllo for elevenses, put a slab of it on her village salad for lunch, have it for supper along with a vegetable casserole and then pair it with watermelon for a scrumptious dessert. The only other food that a Greek may be even more addicted to is bread. If you were to guess which nation boasted the most cheese eaters on the planet, surely you would say France, home to so many delectable and sophisticated fromages.

Anyone with observant eyes and a rumbling stomach will notice how newcomers to the city – and their snack foods – are cropping up like the pink beijo-turco flowers that grow in Rio’s forests after a heavy rain. There’s Hasan with his eggplant esfiha pastries amongst the popcorn vendors and candle-lighters at the Nossa Senhora da Glória church of Largo do Machado; energetic and trendy Armin with his falafel in Botafogo; tired Hafez with his boxes of savory snacks, trying to find shade on the Rua das Laranjeiras. Brazilians didn’t need to be told to like Arab food, and now they’re getting a fresh wave of that culture’s already iconic snacks. The bready esfihas and bulgur wheat kibe may be to Brazilians what chicken tikka masala is to Brits, a formerly foreign food now amongst the country’s most ubiquitous for drunk munchers and rushed lunch-breakers alike. Arab migration dates back over a century in Latin America, and Brazil’s Lebanese diaspora is the largest in the world, with a population as high as 10 million. Some 10 percent of Brazil’s congress is of Arab ancestry.

In the heart of Alfama’s historic flea market is a surprise: Lisbon has a small restaurant dedicated entirely to mushrooms. Located inside the charming old market building from where there is an excellent view over the Tagus river, Santa Clara dos Cogumelos (Saint Clara of Mushrooms) is a very peculiar eatery: from starter to finish, including desserts, are unexpected combinations of shiitake, oyster, porcini, black trumpets or truffles, all cooked using a variety of techniques.