To say that Athens gets hot in the summer is an understatement. Many Athenians escape to the islands, preferring a sea breeze to the sweltering city. But for those stuck in the concrete jungle, a classic way to cool down is to visit one of the city’s many open-air cinemas – also called summer cinemas – after dark. An important summer ritual for Greeks of all ages, these open-air cinemas usually open for the season in late April or early May, when the weather first starts to warm up, and close in late September or early October.

One of the tenets of the Slow Food movement is that it’s impossible to make a really good meal out of industrial food. Of course certain ingredients can pass muster with diners even if they’re grown on an industrial farm. Yet sustainable farming has an obvious impact – it’s not just a matter of better tasting and healthier food but also environmental and societal benefits. In Barcelona, we are surrounded by a large number of independent, sustainable producers that, too often, are completely invisible. They work in nearby provincial areas such as El Prat, El Penedès, El Vallès, El Garraf and El Maresme that give forth a veritable cornucopia of food goods: vegetables, fruits, nuts, legumes, olive oil, cheese, marmalades, cereals, flours, honey, meat, fish, wine, vermut, beer and more. These producers work hard every day to remain independent and adhere to stringent standards of sustainability and quality.

In September of last year, Shanghai eaters were shocked when Mr. Wu shuttered A Da Cong You Bing, the city’s best scallion pancake shop. The only explanation for the abrupt closure was a worn sign on the door that read: “My family has a problem. The stall will be closed for a few days.” But this wasn’t the whole truth. Some attributed the shutdown to the fact that the stall was featured on the BBC program Rick Stein’s Taste of Shanghai, claiming that it had drawn too much attention to the unlicensed vendor and the government had taken note.

Bread may be fundamental to Portugal’s food culture, but over the last few years the baked goods landscape in the country has begun looking increasingly uniform, with fake neo-classic franchising playing no small part in its decline. Although many old and family-run bakeries can’t keep up with the competition – especially in the cities – there are a few initiatives kneading a small revolution. Courses, workshops and experimental research are creating a new class of future bakers who often rework old techniques. Among them is 21-year-old Diogo Amorim. Gleba, his bakery, with its contemporary look and historic techniques, attracts customers from all over Lisbon. It opened six months ago in Alcantara, a neighborhood that shows traces of many past lives, from industrial working-class to the aristocratic.

Pizza, as you might already know, was born in Naples. What you might not know is that in Naples, fried pizza existed before baked pizza. And although Neapolitans have raised pizzamaking in the oven to an art form, their skill at turning out fried pizza is even greater. As with so many local specialties in this city, it’s hard to say who makes the best fried pizza here; there are improvised pizzerias in every corner of Naples, street vendors that make a really good pie. There’s a saying here, voce e’ popolo, voce e’ dio (the Neapolitan version of vox populi vox dei), which means that something is certain – there’s no doubt. And that applies to Masardona's pizza being one of the best in the city.

Something special happens when the sun goes down. Night markets, whether in Southeast Asia or in the heart of Queens, inspire a thrill — we call it a sense of wonder — that brings boundless childhood summers to mind. We still feel it, on warm-weather Saturdays, when we ride the elevated 7 train to the Queens International Night Market. (It's a pain to park anything bigger than a bicycle near the market; we always take public transportation.) Many of the other passengers seem to be headed our way. Surrounded by fellow pilgrims, our anticipation builds as we descend from the train platform and march south. As we near the market grounds, and as the wind freshens and comes about, perhaps we catch the scent of sizzling meat.

The calango is a tiny lizard commonly found in the hottest, driest and poorest parts of Brazil’s Northeastern countryside, and in popular culture, the calango is also a symbol of hunger. Someone who eats calango is driven to do so because he has nothing else to eat. Thankfully, at Kalango there’s plenty to eat. Kalango (the “K” is for chef Kátia Barbosa, owner also of Aconchego Carioca) is a spartan botequim, or small gastropub, located near downtown that serves the specialties of Brazil’s Northeast states. This comida sertaneja, as it’s called, is very hard to find in Rio.

As you approach Maroussi by train, it is difficult to imagine that 100 years ago it was full of mansions with lush gardens – some still standing today – olive orchards and vineyards. Situated 13 km north of Athens, Maroussi (AKA Amarousion) was the home of Spyros Louis, the first athlete to win the modern Olympic marathon event in 1896. It is also where the modern-day Olympic Stadium and sports complex are situated. The train was connected to Maroussi in 1885, when it was also known as “the beast,” and it took three hours for the beast to make the trip from Omonoia.

Many people think of miso as the soup that gets tacked onto every Japanese meal. We can still remember our first experience of Japanese food in the West, when the waiter brought the soup at the end of the meal, and someone thought he’d forgotten to serve it at the beginning. Any self-respecting Japanese meal, just about anywhere in the world, will end with miso soup. The miso used in the soup is a paste that will determine the flavor of the soup. There are basically three kinds of miso: red (akamiso), white (shiromiso) and mixed (awase), which has a brownish hue and is the most common variety used in miso soup.

The rustic Neapolitan tarallo, made of 'nzogna (lard), pepper and toasted almonds, is a true delicacy. It can be considered the first popular snack in Naples, a bite that combines the punch of black pepper with the sweetness of almonds, the whole united by lard. It’s a dangerous combination for the waistline, that’s for sure. Taralli are offered to celebrate a new home, shared with friends during soccer matches, enjoyed with one’s significant other on the rocky shore, given to guests at parties, taken aboard boats (it’s the very height of yuppiness to eat them accompanied by iced spumante while out at sea). Until a few years ago, taralli were sold by tarallers, roving vendors who carried a basket full of taralli on their heads.

Asking cariocas if they remember their first Biscoito Globo, the ubiquitous, crunchy beach snack, is like asking anyone who teethed in the United States if they remember trying Cheerios for the first time. Globo biscuits and sweet iced mate are to Rio's beaches what hot dogs and beer are to American baseball stadiums. Calls of “Ó Globo! Ó mate!” are the soundtrack along the shores of Copacabana, Ipanema and Leblon. The iconic packaging, which features a globe-headed mascot surrounded by the Eiffel Tower, the Tower of Pisa, Portugal's Belém Tower and Rio's Sugarloaf, has been reproduced on t-shirts, tote bags, and cangas (sarongs).

Tucked away from the constant hustle and bustle of Queens Boulevard, Anna and George Artunian’s Sunnyside bakery, Arsi’s Pateseria, is a pleasant surprise. As we walk down 47th Avenue towards the gauzy Midtown Manhattan skyline, the smell of freshly baked burekas greets us long before we get to the bakery’s wide window. Inside, in metal trays behind the counter, four different types of burekas, savory sesame ring cookies and even baklava gleam in different shades of gold. Also behind the counter is 60-year-old Anna Artunian, one-half of the husband-and-wife team running the establishment and chatting with the customers, most of whom are regulars.

Perhaps nowhere else is it clearer that as many as one million Syrians have settled down in Istanbul than in the city’s historic Fatih district. The neighborhood is home to the city’s immigration headquarters (Fatih Emniyet), and the backstreets leading up to it are among the most transformed, since Syrians and other new arrivals end up spending hours there, often taking multiple trips to the office to get their paperwork in order. A stroll down the area’s Aksemsettin Caddesi reveals a dwindling number of Turkish markets and a rising number of Syrian ones.

Portuguese gastronomy is at the core of Rio's botequins, the small, often family-run gastrobars spread all over the city. Traditional botequins offer European food and some unique aspects of Brazilian culture – mix you’ll find only in Rio. That being said, it’s hard to say whether Tasca Carvalho, the brand new Portuguese gastrobar in Copacabana, is a typical botequim. Run by two young Portuguese friends newly arrived from Porto, Tasca Carvalho is not a mix, but 100 percent Portuguese. And that makes it unique in Rio's street food landscape. Perhaps the only indication of Brazilian influence you might find at Tasca Carvalho is in the ambience. The tables and benches, spread all over the sidewalk, follow the carioca rules of informality.

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.