Some sociologists say that Spanish society and culture can’t be properly understood without spending time in its bars. You can find bars in mountain refuges, subway stations, on the beach and by the highway. In Barcelona, there are as many bars as taxis and ten times more bars than bookshops. In fact, a recent study by Coca-Cola found that in Spain there’s a bar for every 132 Spaniards. The same study points out that a third of Spaniards wouldn’t hesitate to leave their house keys at their local bar and that two-thirds of them are on a first-name basis with the employees there.

It’s Sunday morning at La Pignasecca market in Naples and time is in flux. Picture a Boccioni painting: movement is blurred, there is an inter-penetration of objects, speeding vehicles and sound – a frenetic moment in the Futurists’ imagination. The city rises as engines splutter, traders hustle, klaxons yelp. Santa Maria di Montesanto spews punters out into the marketplace after mass; men peel off, heading home to check on the simmering ragù; groomed teenagers peacock on mopeds as groups of women push in line to pick up their last-minute order of fresh pasta, charcuterie and squid. The church bells chime: it’s lunchtime. Anticipation is in the air.

It all started with a seriously delicious hamburger in New York City. Rumor has it that it was this burger that first gave acclaimed Catalan chef Oriol Rovira the idea of opening Sagàs Pagesos y Cuiners (“Farmers and Cooks”) in the Born district of Barcelona. Specializing in high-end sandwiches, the restaurant embraces the farm-to-table philosophy, with a menu that is both distinctively Catalan and international in scope. Rovira, who also runs Els Casals, a Michelin-starred restaurant in the tiny village of Sagàs near the edge of the Pyrenees, opened his sandwich spot in May 2011. As at Els Casals, nearly all of the food at the Barcelona venue comes straight from the chef’s village farm. But why sandwiches?

To make excellent octopus broth, you must first fill a huge pot with water to the brim – at least 20 liters – bring it to a boil, add salt and pepper in industrial quantities and immerse four large octopuses. After 33 minutes (and not one more) of simmering, it’s ready: the octopus has reached the perfect consistency. Yet in Naples there’s a saying, “The octopus cooks in its own water” – a proverb that means that a person needs to get to the truth on his own and in his own time. Lello tells us that what this saying is referring to isn’t actually true, since clearly, an octopus needs much more water than what it comes with to actually cook.

On the left bank of Tbilisi’s Mtkvari River in the Plekhanov district is David Aghmashenebeli Avenue, a thoroughfare long associated with wallet-friendly Turkish restaurants and discount clothing boutiques. Some 15 years ago, the crumbling 19th-century buildings and huge eucalyptus trees that lined the street were crowded with people hawking everything from wooden utensils to costume jewelry, fresh produce and coffee beans labeled “Nescafé.” It was a congested, lively sidewalk bazaar of sorts that exemplified the Asiatic spirit of Tbilisi. However, a massive urban renewal project in 2011 put an end to the colorful disorder. Today, most of Aghmashenebeli is a sensible European-looking boulevard that the former President of Georgia likened to Paris, although the Turkish restaurants are still there serving up tasty Anatolian specialties.

Neapolitan cuisine encompasses such a variety of dishes, ingredients and preparations that sitting down for lunch in Naples is always a feast of smells, tastes, colors and sensations. Menus here are populated by numerous meat dishes and equally many seafood options, and the extraordinary variety of vegetables are complemented by unique dairy products, preserves and sweets steeped in history and quality. Restaurant kitchens know how to be baroque (as demonstrated by menesta maretata, a complex soup that “marries” a variety of vegetables and cuts of meat), sumptuous (as in eggplant parmigiana), or deceptively simple (as in the classic spaghetti aglio e olio, which combines the basic trio of pasta, garlic and oil to great effect).

Mexico City can be quite lacking when it comes to finding fresh, tasty seafood. At most markets in the city, in addition to the taco places and tlacoyo vendors, there is usually some kind of stand selling seafood, but the quality can be either very good or very bad. Buying from the right place is thus essential, and that’s why we were so happy to discover La Morenita, a standout seafood and oyster restaurant in Colonia Roma’s Mercado Medellín. Established more than three decades ago by Miguel Gardono, La Morenita has become a busy, reliable stop for shoppers.

Jambú-infused cachaça is bitter and a bit grassy, and newcomers to the drink often grimace at first taste. But seconds later something happens: the liquor's harshness gives way to a gentle tingling, then numbness, first on the tip of the tongue, then to the lips and the back of the throat. Next, the mouth salivates, pulses, and other foods and drinks take on new flavors: a cheap beer suddenly tastes like champagne. The second quaff is often taken much more eagerly than the first. Jambú, or acmella oleracea, is a flowering herb found throughout the Amazon and other warm, humid climates.

The Michelin Guide might have come to Shanghai last year, but the far more interesting trend for budget diners in the city is the fast-casual local restaurants opened by savvy young Chinese with an eye for design and a great palate. The Noodlista is one such shop – just check out its logo. The character for noodles is warped into a downward facing arrow, as if to say, “Get your noodles here!” It’s good advice, and local millennials are taking it: come lunchtime, Noodlista is always packed to the gills with young worker bees from nearby office towers. Showcasing the management’s fluency with both Eastern and Western cultures, English and Chinese coexist happily on the menu.

(Editor's Note: This piece marks the beginning of CB's new section devoted to the food of Queens, New York and the people making it. We plan to file regular dispatches from the borough of global eats.) For many visitors to New York, the first sight of Queens comes from above, during the approach to JFK or LaGuardia, the city's two international airports. And the first thought, upon landing, is to keep going. How far is it, they wonder, to our room, and to the museums, theaters, shopping and sights? How long till we get to "the city"? For culinary explorers, Queens is not merely a way station, it is a destination in itself. The largest in area of the five boroughs of New York City, Queens is the home of well over two million people, half of them born outside the United States, speaking untold hundreds of mother tongues. During the course of a day, you might hear a dozen languages without breaking a sweat.

Istanbul's Kurtuluş neighborhood is home to a number of slow-burners, establishments that may be hidden in plain view due to their plainness but that end up becoming some of our favorites. Gimmicks don’t fly in down-to-earth Kurtuluş, where neighborly ties are strong and home-cooked meals are preferred. Tucked on a side street in the middle of the quarter is a small eatery that exemplifies this tried-and-true character. Behind windows that fog up quickly in the winter sit a handful of tables facing an open kitchen in what might be Istanbul's coziest restaurant, Ben-u Sen, which showcases the divine ev yemekleri (home cooking) of the delightful Nuray Güzel.

It’s difficult to imagine a job where a major skill set is eating a vast amount of food and becoming as large as possible. Yet sumo wrestlers, in an effort to bulk up and to be able to throw their weight around in the ring, consume enormous amounts of protein-rich, calorie-heavy meals – primarily in a dish called chanko nabe (a one-dish hotpot) – hoping to do just that. At Chanko Dojo, diners are encouraged to fill up as much as possible as they soak up sumo culture. (For another eatery devoted to wrestling, read our review of this Mexico City spot.)

Cariocas don’t give much love to Niterói, joking that the only reason to go to this city across Guanabara Bay is for its spectacular view of Rio de Janeiro. But while less busy and far less popular than Rio, Niterói is full of lovely beaches, great museums, excellent restaurants and hundreds of bars. Among the many reasons to visit is Salve Simpatia, a botequim – or small, family-run bar serving snacks to go with drinks – where traditional bar gastronomy mixes perfectly with delicious artisanal burgers, specialty beers and remarkably good music, especially samba. Salve Simpatia (which means something like “Hello, my brother” in Portuguese) opened in 2012 and was known only to locals in the Icaraí area for a while.

Jordi Piquer opened his popular restaurant in 1968 on an auspicious day: April 23, a holiday that honors his namesake saint. Saint Jordi must have been looking down on Piquer and his dedicated customers when the restaurateur decided to sell his establishment in 1986: three trusted employees banded together to buy it, keeping the Sant Gervasi neighborhood institution in business. A fine example of a classic 20th-century Barcelona restaurant, Casa Jordi is decorated in the old masía (traditional Catalan farmhouse) style over two floors but adapted to urban dimensions, meaning that there are fewer intimate corners but larger, more flexible rooms with tables for groups.

Inside the humble municipal market building of an elderly neighborhood between Belém’s touristic spectacles and the sprawling Monsanto park is the oldest Azorean restaurant in the Portuguese capital. In non-descript Ajuda, with a view over Ponte Abril 25, this place transports Lisboetas with tastes of the remote and alluring Atlantic archipelago. When Espaço Açores opened 10 years ago it was one of four restaurants in Lisbon serving the food of the Azores. The others have since closed, a fact that at first seems difficult to understand: food from these islands is incredibly good and more often than not reproduces traditional dishes from the mainland, albeit with considerably better ingredients.