There was a dowdy little joint in Batumi, Georgia’s Black Sea port town, where two middle-aged women churned out the most exquisite Adjarian-style khachapuri pies in an old pizza oven. It was a must-stop for every trip to the coast, as there were few places in Tbilisi that could scorch such an authentic acharuli. As the years passed, the seedy potholed streets that hosted a pool hall, brothels and our favorite khachapuri joint transformed into a gentrified neighborhood of gift shops and boutiques catering to the ever-growing number of tourists flocking to Batumi. Meanwhile, the boat-shaped acharuli has become one of the most emblematic dishes of Georgian cuisine and is not only found all over Tbilisi, but is also being served in New York and Washington, DC.

When Leyla Kılıç Karakaynak opened up a tiny restaurant on Kallavi Street in Istanbul's Beyoğlu district in 1996, she couldn't have predicted that she would end up practically running the whole street. That small restaurant, Fıccın, is now spread across six buildings on the same block-long pedestrian-only street and has become an Istanbul institution. The restaurant shares its name with its signature dish, a meat-filled savory pastry that is among the Circassian specialties on the menu. Karakaynak's family hails from North Ossetia, and while Fıccın serves up a number of classic Turkish staples, it's the regional dishes that you can't miss, including Çerkez tavuğu, a simple yet sumptous paste of shredded chicken and walnuts, and Çerkes mantısı, comforting, pillowy dumplings served under yogurt.

In downtown’s Chiado, a slightly bougie-looking restaurant profits from the crowds leaving weekend performances at the São Luiz theatre, a former 19th-century cinema. This place also takes advantage of a common and ubiquitous Portuguese ingredient – rice. Bagos (“grains of rice”) has just a few tables over two floors; the upstairs level is the more suitable for a business lunch partaken while tram 28 trundles by. The vibe is refined but simple, and that is reflected in how the humble staple on its menu is reworked in the kitchen. Chef Henrique Mouro explores the many ways in which different varieties of rice are prepared across the country, revealing a very typical component as the basis for all sorts of invention.

From Rio to Venice, from Cologne to New Orleans and from Patras to towns all over Greece, Catholics and Orthodox (along with believers and nonbelievers of every description) celebrate Carnival – the three weeks preceding Lent – with parades, masquerades, pranks, Dionysian revels and Lucullan feasts focusing on roasted meats. After all, the word “carnival” is thought to have come from the Italian carne levare or “abstain from meat” – which is also the meaning of the Greek Apokreas – and heralded a time when many religions prohibited consuming flesh during the sacred fast before Easter.

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.

One feels cooler simply for patronizing La Secina. The architecture of the restaurant seems to evoke a perpetual party vibe. At dinner, individual lights dangle on long lines amid a mesh of vines that gives the cavernous space a homey, DIY feel. The teal and orange on the wall are bright and clean. The stenciled restaurant logo and exhortations of “bienvenidos” feel as organic as they do well designed. Downstairs, picnic tables radiate outwards from a long, inviting bar. Upstairs a dedicated booze closet services a patio that looks out upon a beautiful church across the street. And on weekends, live blues bands play everything from Albert Collins to Muddy Waters to Robert Johnson.

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.

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.

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.

Avenida da Liberdade is commonly acknowledged to be the most luxurious and expensive artery in Lisbon. It’s the obvious place to go to buy a famous designer’s dress or fancy jewelry. It might be surprising to learn, then, that it’s also the place to go for good pernil assado (roasted pork shank) or cabidela (chicken blood rice). The reason is simple: the area is filled with great tascas, which draw a wide range of local office workers, including lawyers, business consultants, public servants and unpaid interns. Among these tascas, O Cartaxinho is one of the best, if not the best. Unsurprisingly, it’s also one of the most popular – it’s not unusual to see groups waiting outside for a table during lunchtime.

There is a Portuguese word famous for allegedly being untranslatable in any language. That word is saudade, an emotional state caused by missing someone or desiring something that does not exist anymore. For years, children have been told that only lusophones are able to feel saudade, since others cannot express that feeling. It’s a compelling story, but, unfortunately, it’s also far from true: saudade means virtually the same thing as añorar or echar de menos in Spanish, nostalgic longing in English, or sehnsucht in German. If one is looking for a truly untranslatable word in Portuguese, he or she should look no further than right around the corner, to that cheap no-frills restaurant serving large portions of traditional food piled onto large aluminum platters.

The 2010 makeover of Tbilisi’s old town broke the hearts of many locals and preservationists, who lamented the destruction of the neighborhood’s original 19th-century buildings and the fabrication of their cinder block replicas. The quarter hadn’t seen destruction on such a scale since the Persian ruler Agha Mohammad Khan razed the city in 1795. Instead of bemoaning the architectural tragedy, one local artist seized the opportunity to inject some positive vibrations into the precipitous hillside district by purchasing a small house underneath the 16th-century walls of the Narikala Fortress and turning it into one of Tbilisi’s coolest cafe-restaurants. Getting there, however, requires a bit of cardiovascular effort.

We were cutting grapes in a vineyard in eastern Georgia’s Kakheti region when two young men led a goat by a rope to a nearby tree and sliced its neck with a hefty hunting knife. Our lunch. They offered us a sliver of fresh raw liver with sardonic smiles, insisting it was the best part, but we passed and waited for the meat to be cut, skewered and roasted over the coals of tsalami, or vines. Served with bread, razor-sharp sheep cheese, whole tomatoes, cucumbers and rkatsateli wine, nothing could have been more Kakhetian. Since that harvest, we have been to scores of Kakhetian restaurants in Tbilisi, most of which were gratifying, but none had goat on their menus.

When you’re in the capital of Sichuan province, snacking is a way of life. Noodles made of bracken, wheat, chickpeas, mung beans and more, as well as tofu puddings and dumplings, make up the city’s “small eats” (小吃, xiǎochī) scene, served from what’s colloquially known as “fly restaurants.” A step above street food, these family-owned eateries are so called because they attract diners like flies, despite what might seem like a less-than-hygienic atmosphere, because the food is too good to miss. Find a hole-in-the-wall that has more diners than stools, and order one of these local specialties for a delicious meal.

Perched on Lisbon’s highest hilltop, Graça has a villagey feel and is probably the best district to absorb stunning views over the Portuguese capital. Home to plenty of bakeries, cafes and two of the city’s most beautiful viewpoints, it does, however, risk irreversible damage because of the real estate boom affecting much of the city center. It is, for now, still a charming area, with an elderly population and remnants of working-class neighborhood life. To get to the panoramic views during summer, there are two options that don’t involve being stuck in a taxi: climbing steeply up through the irregular lanes of Alfama or Mouraria, or following the route of the iconic and crowded tram 28.