Mexico City may be a sprawling metropolis of 21 million, but on its edge is an oasis of green unlike any other in the world. Known as Xochimilco, it is the last part of the city that preserves an ancient system of canals and farms first built by the Aztecs when the area was on the edge of a long-gone lake.

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).

A tourist visiting Rio is very likely to hear mention of Baixo Gávea, or B.G. It’s a very famous square, surrounded by bars and restaurants where young, rich and beautiful cariocas get together. The place is packed almost every night and especially inside the two bars that dominate the bohemian scene there, serving cold draft beer, pizzas and grilled meat. Baixo Gávea is undeniably cool and makes for a good time, but it can also be a bit disappointing if you don’t like crowded places or don’t have much money to throw around. But not to worry: There’s a way to enjoy Baixo Gávea without the unnecessary fuss and frippery – and to eat well while doing it (probably better, in fact, than you would in the more famous restaurants).

The dog is in the car whining with a lusty craze at every cat and dog she sees. It’s shedding season and tufts of her hair puff off at every lurch and bounce in the back seat, the window smeared with her nose art. We park at the top of the street and walk down to school to pick up her six-year-old master, who grumbles that she’s hungry, starving even, and asks if we can go to “that bar.” The fridge is empty at home and “that bar” – the Black Dog – stands between us and the car. It is an excellent suggestion. The Tbilisi bar scene is a recent phenomenon in the scope of what is by tradition an intense dining culture.

We’ve raved about the Shanghai-style soup dumplings at Fu Chun for years now, but let us let you in on a secret: There’s more to this tiny hole-in-the-wall than its xiaolongbao. Since 1959, the restaurant has been serving up benbang dishes, but little has changed on the menu or in the kitchen. A Huaiyang snack shop, Fu Chun admittedly skews Shanghainese in its regional flavor profile, which means extra sugar and a lot of pork. Try the traditional deep-fried pork cutlet (炸猪排, zhà zhūpái). Pounded thin before hitting the deep fryer, these fatty flanks are served sliced with a side of black rice vinegar – a dip helps cut the grease.

Hidden behind the imposing stadium of the Panathinaikos football team – the green team as opposed to its eternal rival, Olympiakos, the red team – lies a tiny eatery that recalls Athens before the 1960s, when urban sprawl destroyed everything. Occupying two adjacent whitewashed houses, Oinomagereion to Trifylli, named after the team’s clover logo, has been serving simple, delicious food to loyal customers for the last 60 years. The taverna was founded in 1962 by Kyria (Mrs.) Koula, the present owner’s mother, in order to earn additional income for her family.

“I don’t want to be famous, I just want to do my best and make good food. You have to work with honesty, from the heart,” Salem Kabbaz tells us. Born in Damascus in 1945, Kabbaz is smiling and animated as he chats with friends and suppliers and walks in and out of his restaurant in the Barrio Gótico. A very small, discreet sign above the door marks his eatery, El Cocinero de Damasco – the Damascus Cook – which is devoted to Syrian specialties like shawarma, hummus and falafel. Neighboring residents and City Hall workers come for take away or to eat at the few tables inside the small eatery.

When Wuyuan Bingjia first opened in 1936, it was one of many Shanghai-style bakeries around town, churning out trays of benbang dim sum dishes to be eaten on the go or taken home and enjoyed with the family. Now, as the city grows skyward and Shanghainese palates skew more international, these old-style bakeries are slowly dying out. Wuyuan Bingjia is one of the last ones standing, and it’s not thanks to the service. (Word to the wise: Be ready to order when you get to the cashier or you’ll get an earful from the waitstaff.)

Standing on a sidewalk at 9:30 a.m. in Mexico City, waiting for food, one typically imagines pan dulce (sweet bread), tamales and piping hot atole, a drink made from corn. Yet there we stood waiting for Arroz Black Tiger – a steaming, heaping, fried rice dish with salmon, surimi, shrimp and white mushrooms, something you might find for dinner at a trendy Asian fusion restaurant in Roma or Polanco, but certainly not for 135 pesos (US$7.30) and not at that hour. Nevertheless, business was humming, and several clients rushed in and out to place orders for their office, buying early before ingredients start to run out. Why so early?

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.

Dear Culinary Backstreets, I keep hearing buzz about “yangmei” season in Shanghai. What’s all the fuss about this fruit? What’s in a name? Shakespeare could just as easily have written, “A yángméi (杨梅) by any other name would taste as sweet.” This little red Asian fruit has a plethora of monikers: Myrica rubra, Chinese bayberry, yamamomo, Japanese bayberry, red bayberry and waxberry. But a decade ago, the sweet and sour fruit was rebranded as the yumberry in the United States (where it is sold in juice and powder form, but not fresh, due to an import ban on the live fruit) to stand out from other exotic “superfoods.”

It is 9 p.m. and we are packing our bags for a red-eye flight to Poland when I realize we have no chacha, Georgia’s otherworldly elixir of distilled fermented grape pulp. We never, ever travel without chacha, and there is no way we’re going to buy over-the-counter, factory-produced product – and not because it’s over-priced. Chacha is a potion brewed by the hands of masters over wood fires in hammer-battered stills sealed in a paste of dirt and ash. Without the human touch – the artistry – chacha is just a soulless, liver-grinding liquor. I make the call. Andria deals in wine, chacha and religion from a devilish little cellar in Tbilisi’s old neighborhood of Sololaki.

The kids were playing in the park, and Dad needed a cup of coffee for the caffeine boost to keep up with his daughter. Luckily there was a café nearby – where you would least expect one. The park is a modest little playground patch in a residential neighborhood across from the funicular that hauls people up and down Mtatsminda mountain to the amusement park and restaurant above the city. The café is on the ground floor of a Communist-era apartment block, just a couple dozen paces away. It was everything a little coffeehouse should be: warm, cozy, quiet and wheelchair accessible.

Wild greens or horta (χόρτα) are an ancient and still very important ingredient in traditional Greek cuisine (and happen to have exceptional nutritional value to boot). Every season brings different varieties: some more bitter, some milder and sweeter, some naturally salty, all with different textures and shades of green. Almost every single taverna around Greece includes horta in the salad section of the menu. These boiled greens served with virgin olive oil, sea salt and plenty of freshly squeezed lemon juice are one of the most common salads enjoyed throughout the year, usually with fish, but sometimes also with meat. When eating out, Greeks typically ask the waiter what type of horta the restaurant serves, as they know it depends on season, region and availability of each variety.

In Shanghai, wet markets hold the telltale signs that spring is finally upon us. Stalks of asparagus as thick as a thumb spring up first, alongside brown and white bamboo shoots so freshly pulled from the earth that dirt still clings to their fibrous shells. But the most exciting spring green is fava beans (蚕豆, cándòu), also known as broad beans. Their short season in Shanghai – usually just about four to five weeks – means they’re in high demand, and stalls are filled with workers shelling the labor-intensive beans by the bushel.