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.

In Shanghai, wet markets hold the telltale signs that spring is finally upon us. Stalks of asparagus as thick as a thumb spring up first, alongside brown and white bamboo shoots so freshly pulled from the earth that dirt still clings to their fibrous shells. But the most exciting spring green is fava beans (蚕豆, cándòu), also known as broad beans. Their short season in Shanghai – usually just about four to five weeks – means they’re in high demand, and stalls are filled with workers shelling the labor-intensive beans by the bushel.

So you’ve eaten your way around Shanghai’s delicious noodle shops and restaurants but want to bring a taste of China back home? Or maybe you’re searching for a weird food gift (pickled chicken feet anyone?) for a hard-to-please friend. You’re in luck, as specialty food shops dot the city and are quite popular with locals, offering a huge variety of well-packaged items.

A wide variety of reasonably priced fresh fish, shellfish, crabs and kalamari for the customers to choose at the Athens Municipal Market, a stop on our Culinary Secrets of Downtown Athens walk.

A market with a million stories, the Mercado de la Merced lies sprawling across some 12 blocks in Mexico City, offering a mind-boggling array of goods, as it has for centuries. Operating in the northwest corner, next to the 17th-century Santo Tomás Apóstol La Palma church, is a 67-year-old association of dulcerías – purveyors of sweets and candies – with 154 stalls selling traditional goodies in elaborate and tantalizing displays. Willie Wonka would eat his heart out. According to the association’s president, Daniel Jiménez Chavarría, it is the only market of its kind in Latin America, and it is deeply ingrained in the traditions that thrive across Mexico. “What we sell is purely artisanal, and we are offering a different presentation,” said Jiménez, a silver-haired man with glasses, describing how these small stalls differ from their larger competitors.

While much of the West celebrates Christmas in an orgy of shopping for presents that climaxes after a single dinner, Georgians commemorate the season with a 30-day binge of feasts that pretty much begins on December 17, Saint Barbara’s Day (Barbaroba), and peters out by January 19, the Orthodox Epiphany (Natlisgeba). Unlike Americans, Georgians don’t consume stuff for the holidays – they annihilate food. The best, if not most chaotic, place to stock up on victuals is the Dezertirebi Bazroba (“Deserter’s Bazaar”). Located near Tbilisi’s central train station, this raw, disorganized, 2,000-square-meter warren of unprocessed agrarian pabulum is the city’s largest open-air market.

Oaxaca has become one of our favorite food destinations in Mexico. A few weeks ago we visited the city again, but this time it wasn’t the moles or the decadent regional food that caught our attention, but an organic market where we had a delicious breakfast one morning. El Pochote (named after a thorny, flowering tree native to Central America) is an organization of local organic producers that was founded in November 2003 by local artist Francisco Toledo. Making an omelet at Mamá Lechuga, photo by Ben HerreraThe market offers all kinds of products, from vegetables and fruits to prepared meals and juices. The main objective of the market is to support those who grow or make healthy products of excellent quality, who interact with the natural environment in a way that respects local ecosystems and who maintain and increase the fertility of the soil and land.

Rio de Janeiro didn’t need to be told to host colorful outdoor fresh food markets. The feira is a carioca tradition, with wooden booths going up overnight at their weekly locales and filled with wares so standard any local could recite for you off his head what you can and can’t find there. But with a little kick from the tools of the digital age and a hipster-era recalibration of the local palate, the Rio feira has gotten a particularly nice new edition. Junta Local brings together local producers and budding chefs in a biweekly, rotating-location food-fest, often accompanied by live music.

Dear Culinary Backstreets, I’ve heard about “wet markets,” but what are they exactly? And where can I find the best wet markets in Shanghai? Stocked with all the fresh produce and live seafood that hungry Shanghai residents could ever cook up, wet markets are an essential alternative to the brand-name supermarkets vying for their slice of the market share of the planet’s largest population. These markets are so named because the floor tends to be wet, thanks to the live fish flopping around and the vendors’ habit of throwing water on the ground to keep the area clean. They are, however, under constant pressure from the central government’s drive to urbanize the population and modernize facilities, which has led to the steady destruction of the more traditional ones.

Having been divvied up and overshadowed and even having come back from a nasty fire, the Mercado San Juan Arcos de Belén, also known as San Juan Salto del Agua, has hung on tight as a staple market in Mexico City’s downtown. Born from the 1950s-era split-up of the original San Juan marketplace, which stood only a few blocks away in what is now the Plaza San Juan off of Ayuntamiento, this is a very budget-friendly market in Mexico City’s downtown, largely bereft of high-end delicacies but bustling with mostly working-class families. It is shouldered by two major traffic conduits, Eje Central and Arcos de Belén, and sits atop the two-line intersection of Metro Salto del Agua on the forest-green and pink lines.

Stretching 25 feet alongside a pharmacy in the heart of Istanbul's Şişli district, just a three-minute stroll from Osmanbey metro station (Pangaltı exit), lies Uğur’s fruit and vegetable stand. Day in and day out, come rain or shine, Uğur sits and smiles, utterly engulfed by the fruits and vegetables he sells. Hundreds of people stop by his stand every day: family, old childhood friends, local politicians, tourists.

Els Encants is the kind of magical, exciting market where we arrive having in mind exactly what we need, but after a few hours immersed among objects and voices, we emerge with a bag full of items we never knew we needed or that we could even find.