A gloppy, meaty, cheesy brick served in a pool of sauce and with a mountain of fries: please meet the francesinha, the culinary pride and joy of the city of Porto. Today, restaurant billboards proclaim in many languages that they serve the best version in the world, revealing the genuine power of this artery-clogging combination that, incredibly, was originally conceived as a snack. We have to say it though: eating a francesinha is worth every last calorie. This dense sandwich, which is impossible to eat just with your hands, is often considered the lusophone version of the croque monsieur.

Kolonaki, or “little column” in Greek, might just be Athens’ most iconic neighborhood, forever synonymous as it is in the minds of Athenians with the wealth and idiosyncrasies of its affluent residents. Occupying the area from Syntagma square up to Lycabettus hill, it’s full of swanky boutiques, cafes and restaurants. However, one of its most famous hidden gems is actually the unfussy Philippou, a small family-run eatery that sits on a tree-dotted street away from the hustle and bustle of the main square. Founded in 1923 by Kostas Philippou, it began as a humble taverna with earthen floors and big barrels filled with home-made wine.

What is it that’s so dizzyingly addictive about okonomiyaki? It might be the interactive DIY nature of building your own meal and serving it up from a Japanese teppan grill. Perhaps it’s the communal feeling of sitting around with a beer or two and cooking together. However, most likely is the fact that it’s so darn delicious and satisfying. It’s Japanese soul food that has somehow not quite reached the shores of many foreign countries. Okonomiyaki is a flavorful pancake chock full of whatever ingredients appeal, cooked on a Japanese grill (okono means “cook whatever you like” and yaki means grill). In all parts of Japan it's the secret second cousin to ramen in the family of fast food and cheap student eats.

Portugal may be known for its abundance of wines, but beer also has a centuries-old history here, with production rooted in local traditions. It’s a story that has quietly been forgotten, but it seems like now is the right moment for a revival. Portugal’s beer landscape has since the 1940s been dominated by the Sagres-Super Bock duopoly, whose common lagers are nothing to write home about. Created out of a merger between previously competing associations, these two new brands (grouped under Central de Cervejas e Unicer) had a huge impact on Portuguese beer habits. The new industrial focus on a simple and standard product effectively wiped out hyper-local hops culture.

Like many of Mexico’s best taquerías, Tacos Manolo greets its patrons from a block away with its alluring smell. But it isn’t the well-known odor of fired achiote on a swirling spit of al pastor or the equally recognizable heavy scent of bistek searing on a griddle. No, the aroma wafting down this particular block of Calle Luz Saviñon is a mystery to the uninitiated – a unique, unplaceable perfume that allures as much as it confuses. It is the smell of onions and unknown meats and mystery sauces bubbling together, fusing into something greater and more delicious than the sum of its parts. It is the smell of the eponymous Taco Manolo, a one-of-a-kind dish that has brought the restaurant fame and accolades.

Once upon a time, three brothers decided to immigrate. They left their hometown, an extremely poor city called Canindé, in the northeastern state of Ceará, went to Rio de Janeiro and started working in construction. They built a lot of brick walls, ceilings and roofs. Then, after two years of hard work, they decided to open a bar where they would sell roast chicken, northeastern food and grilled pork ribs. That bar, officially called Roda Viva, became known as Três Porquinhos (Three Little Pigs) when a customer connected the image of the three brothers working together with the classic children’s tale.

Between two simple slices of bread exists a mind-boggling array of possibilities – something not lost on Spaniards, who have turned sandwich making into something of an art form. In Spain, sandwiches go by different names depending on the kind of bread used and local custom. The type that’s generally called a bocadillo in Spanish and entrepà in Catalan traditionally comes on pan de barra, itself a broad category of bread, with varying dimensions, qualities and more specific names, including baguette, maybe chapata (ciabatta), depending on how round the bakery makes it, pistola (pistol) in Madrid and flautas (flutes) in Barcelona if it’s short and very thin.

Cities experiencing rapid urban transformation often find themselves suspended between past and future, with those respective cultures in close juxtaposition. The Santa Apolonia train station, a simple neoclassical building from the 19th century that once served as Lisbon’s central rail hub, is a good example of this; a visit to its north and south sides reveal different routines, atmospheres and of course, flavors. On the waterfront, a few former dock warehouses are the home of gourmet palates. Cais da Pedra, the project of the famous chef Henrique Sá Pessoa, is a modern restaurant decorated in stone, iron and mirrors.

Visitors to Istanbul's iconic Spice Bazaar encounter a place packed wall-to-wall with overzealous shopkeepers selling everything from saffron to sumac assembled in rows of majestic pyramids at slightly inflated prices. But for our money, the only spices worth a damn are found just outside in a humbler setting. Crammed behind a tiny kiosk perched in front of a fast-food restaurant that flanks one of the bazaar's entrances is the endearing Orhan usta. The loveable 65-year-old is a veritable master of çig köfte and a connoisseur of the spicy red pepper flakes cultivated in his hometown of Gaziantep, the southeastern city considered by many to be Turkey's culinary capital.

Sake is a very deeply ingrained part of Japanese culture and its function is everything from ceremonial to social. It might be surprising then to know that there are remarkably few establishments in Tokyo dedicated to simple sake tasting. This is perhaps because the roots of public sake drinking stretch back to the 1800s, when sake was bought directly from a seller and often consumed on the premises with bits of food. Back then, people stood next to sake kegs and enjoyed the brew, eventually turning crates and barrels on their sides and sitting to enjoy their drinks. Food was soon added and the izakaya was born (a sakaya is a place to purchase sake, and the “i-“ prefix means “to stay.”).

We usually steer clear of the touristy Old City district of Kumkapı, where you are more likely to be accosted by an aggressive maitre d’ trying to corral you into his overpriced fish restaurant than to find something simple, tasty and reasonably priced to eat. Sadly, in order to beat the competition next door, most of Kumkapı’s famed fish restaurants seem to have invested more in aggressive customer corralling tactics than in kitchen talent. However, tucked into the neighborhood’s backstreets, we’ve found a few hidden dining gems that locals in the know frequent. When in the area, we skip Kumkapı’s fish restaurant strip and make a beeline for Doyuran Lokantası, a serious little eating sanctuary on a nearby side street.

Julian Ramirez started out at the age of 14 as a shop boy at a busy bakery in Colonia Guerrero in 1959, then a bustling blue-collar neighborhood, easily connected to downtown by streetcar. Back then, at La Antigua del Guerrero, he learned the business: wiping windows, sweeping up and eventually making deliveries on his bike. One nibble at a time, he picked up the art of cake- and bread-making from the shop’s master bakers. Those trade secrets would serve him over the next 63 years and beyond as they pass on to his kids and theirs. Many of Mexico’s classic bakeries like the Guerrero operation fell one by one with the introduction of mass-produced bread, tearing at a staple of communities across the capital.

What's better than a day at the beach? How about a day at the beach followed by fresh seafood and a cold beer in a vibrant neighborhood with views to boot? Bar do David sits on a busy corner in Rio's Chapéu Mangueira, a favela that overlooks the beaches of Leme and Copacabana. On a recent Sunday afternoon, the bar's two floors and outdoor area were packed with locals and tourists noshing on plates ranging from feijoada de mariscos, a white-bean and seafood take on the classic Brazilian bean stew, to the Estrela do David (Star of David), pineapple-mint pork rib tacos.

The neighborhood of Metaxourgio in central Athens gets its name from the historic Athanasios Douroutis silk factory (metaxi means “silk”), which closed down in 1875. The former factory, which now houses the Municipal Art Gallery, was designed in 1833 by the Danish architect Hans Christian Hansen and is among the city's most important surviving neoclassical structures. The building was originally intended to be a shopping center, but because the area became an industrial zone, it inevitably attracted mostly working-class residents who were employed in the nearby factories, smaller industries or workshops.

We spent our first few years in Georgia in a whirlwind of overindulgence, hostages to the unforgiving hospitality of friends and acquaintances. Try as they might to convince us that their wine and chacha were so “clean” we would not get hangovers, there were plenty of mornings when the insides of our skulls felt like 60-grain sandpaper and our tongues like welcome mats for packs of wet street mongrels. We would hobble out of bed and stumble to the fridge and, if lucky, find two of Georgia’s most recognized hangover remedies: Borjomi mineral water and matzoni, Georgian yogurt.