Because of its location, topography and climate, Yunnan province resembles little of what many Westerners think of as “China.” The north is home to mountainous forests full of wild mushrooms and tribes tending goats, while down south tropical flowers and fruits grow in the hot, humid lowlands. More than 25 of China’s 55 state-recognized minority groups live in the province, and the cooking of each tribe has its own distinct flavors and characteristics. Yunnan cuisine is known formally as Dian Cai (滇菜), after the kingdom that resided on the Yunnan plateau more than two millennia ago. This southwestern province borders Tibet and Sichuan to the north and Burma, Laos and Vietnam to the south.

Drive west of Tbilisi for about an hour on the backroad to Gori and you will find yourself in the heart of the Shida Kartli wine region. It is an awesome expanse of plains, rolling hills, jagged ridges and hidden valleys that provide a myriad of terroirs that grow some of Georgia’s most exclusive grapes. In ancient times, these were the grapes for the wine of kings. On a warm spring afternoon, Andro Barnovi was tying up vines to the trellises in his vineyard and nursery, four hectares of hearty, clayey soil in Tsedisi, a remote Kartli village 810 meters above sea level. Part of the Ateni wine region, Tsedisi is said to have the richest soil and best microclimate in the area.

Think of Ramadan, which just began in many parts of the world, as a kind of monthlong biathlon that consists of an all-day race to beat back the hunger and thirst of fasting, followed by an all-night marathon of eating and drinking in order to fortify the body for the next day’s fast. In recent years in Turkey, iftar, the traditional break fast meal that used to mostly consist of some dates and a freshly baked round of Ramadan pide, has started to become an increasingly trendy affair, with ministers, businessmen and regular people trying to make an impression by hosting ever more lavish meals.

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.

On our culinary walk in the borough, you'll quickly realize that Queens is not just a paradise for different ethnic cuisine but also for street food! Approach with an empty stomach.

Entering Central de Cacao, one might think it any other café in the hip neighborhood of Roma Sur. Sitting upon stools, customers hunch over their laptops, sipping from steaming mugs. A wide, beautiful geometric design hangs on the high wall behind the counter. To the left of the entryway, colorful products for sale line a stack of long shelves. But upon closer inspection, the sweet nature of the cafe and store reveals itself. The contents of the steaming mug: chocolate. The geometric design behind the counter: molinillos, or traditional Oaxacan chocolate whisks. The products on the shelves: all chocolate. Chocolate-infused honey. 100 percent chocolate bars.

What the taco stand is to Mexico City or the wok-wielding hawker to Bangkok, the Würstelstand is to Vienna. At any time of day or night, people line up to snack on a quick sausage, with a pickle, mustard and a can of beer. There is an astonishing variety of sausages to choose from – from well-known Vienna sausage to Waldvierter, a twice-smoked sausage made from pig’s head, from spicy Burenwurst to Käsekrainer. The last one is for many locals the king of the Wurst: a coarse sausage filled with pockets of hot, melted cheese that ideally form a crispy crust on the outside once the sausage has been grilled.

Boxes of apples about to be put for sale at a kiosk at Tbilisi's Deserter's Bazaar, which is packed with interesting and tasty wares and is the focal point of our walk in the city. (Photo courtesy of David Greenfield)

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.

There are certain places that experience the strange phenomenon where everything and nothing change at the same time. Take the example of El Racó del Mariner (The Sailor’s Corner), located for 40 years at the old fishermen’s dock in the port of La Barceloneta until it was forced to move when the area was turned into a marina for luxury yachts. Regardless, even at its new address in the modern Port Fórum area, reaching El Racó del Mariner requires that you cross a port police checkpoint, just as you had to at the old spot.

Oaxaca, consistently ranked as one of the three poorest of Mexico’s 31 states, can also claim the title of having the country’s worst school system. Demonstrations and rallies by students, teachers and unions are a regular occurrence in Oaxaca City, causing frequent gridlock in the center of town. The walls of the city in bold graffiti reflect the young voices of the social movement: sometimes, a mere angry scrawl, but more often, these are canvases that will move you to pause and consider these depictions of revolution, past and present. One such wall is on Calle Porfirio Diaz in the Centro Histórico. It’s the exterior of Espacio Zapata, the home of the Asamblea de Artistas Revolucionarios de Oaxaca (ASARO).

When Tonkatsu Hamachan first opened in 2001, it became an industry favorite – one of those places chefs, foodies and lifestyle journalists kept to themselves. Perhaps they closely guarded this spot because the dining room barely fit six tables, most of which were usually occupied by Japanese businessmen. The restaurant itself refrained from self-promotion – the shoji screen with hiragana script and a frosted glass door would have been as illustrative as a blank canvas to the mostly Japanese-illiterate pedestrians in the expat-friendly enclave of Jing’an. We lived just two blocks away from Hamachan for over a year when we first moved to Shanghai in 2007 and didn’t know about the tonkatsu genius until a friend drunkenly whispered the secret to us one night.

Though it’s an age-old method for preservation and flavor enhancement all over the world, the smoking of meat, fish, and cheese is not a notable tradition in southern Europe. In Portugal, in the old days, salt curing was more common – particularly for the national staple, cod. However, the presence of smoking traditions in the north, particularly around the Minho river, indicates the possibility that the Vikings’ favorite method for cooking fish may have reached all the way to the northeastern Iberian peninsula.

Georgians – that is, Georgians who hail from the former Soviet republic and not the American South – love their cheesy khachapuri and their beef-and-lamb-filled khinkali. At a glatt kosher restaurant, however, dairy items and meat items can't mingle, either in the kitchen or in the dining room, and many such establishments serve only one or the other. Marani takes a second approach: two kitchens, two dining rooms, two sets of dishes. It's possible to enjoy a progressive dinner under a single roof, first with khachapuri in a basement bakery that resembles a spartan pizzeria, then with a succession of appetizers, skewers and entrees in the more formal setting upstairs.