Every time we travel outside of Oaxaca, we get something we call “the tortilla blues.” Even if we move around inside of Mexico, particularly in the biggest cities, we cannot help missing the sweet aroma and feel of a warm tortilla almost melting in our hands. Sure, we might run into decadent tacos filled with perfectly cooked meat, or we can taste amazing enchiladas with lush salsa verde. But none of that matters if the tortillas don’t seem to have been touched by the tortillera’s (tortilla maker’s) gifted hands. Everyone talks about the tortilla but not everyone understands it. Supermarkets sell them packed and ready to heat, office workers eat them carelessly at their desks for lunch and only fancy restaurants seem to offer a more authentic version of them.

It’s a cold December afternoon when we arrive at the headquarters of Tamales de Tia Tila in San Gabriel Etla, about 45 minutes outside of Oaxaca City. Knocking on the door, we catch a whiff of spices and corn that the cold wind quickly steals away. But as soon the door swings open, revealing a family with faces half-covered in masks and hands busy at work, waves of warm, fragrant air envelope us. The tamal workshop is brimming: a man is moving stews, a woman pressing dough, an older woman laying corn husks and banana leaves on one of the many tables. Everyone’s movements are so precise and focused that we feel guilty for intruding. But that feeling fades away when a young girl waves us in and brings over a cup of hot coffee.

Just to the east of Flushing, the home of New York City's largest and fastest-changing Chinatown, is a sprawling neighborhood that boasts many of the city's most interesting Korean restaurants and food shops. We hesitate to call it a Koreatown. Compared with the few dense blocks of Manhattan's Koreatown, this part of Queens has a more open feel, with modest buildings, wider streets and more sunlight. Here, in the late 1700s, the Murray family owned a nursery of more than 100 acres filled with trees and other plants imported from around the world. In the late 1800s, when the nursery gave way to residential development, the burgeoning neighborhood was named for the family: Murray Hill.

The squat, bright yellow building with red trim that houses Two Sistas ‘N Da East has the hours of operation – 10:30 a.m. to 4:00 p.m. – painted in big red letters on its side beneath a sign that announces “Soul Food.” But these days, hours are fluid and subject to change, especially in the restaurant business, so we double-checked the hours to make sure. Google told us that the hours of operation had been updated by the business in the last two weeks. We felt good about it. So, it was even more surprising when a hand reached out the door with two fingers extended upward in the peace sign and we heard a voice say “11 a.m., baby.”

Tucked against the back wall of the Expendio de Maiz kitchen are three massive metal pots. Containing cloudy mixtures of corn kernels and limestone water, they seem to sit unattended, when in fact intermittent yet constant attention is being paid to their progress. What is happening is one of the most ancient and important processes birthed by Mesoamerica: nixtamalización. For a people whose main staple was corn, the discovery of nixtamalization was just as important as the domestication of corn itself. This process of mixing corn kernels in an alkaline solution not only loosens the husks of the corn kernels, making them easier to grind, but also provides all kinds of additional nutritional value.

Late on a weekend afternoon, the clamor that greets us is intense, even for Queens. As we descend from the elevated 7 train to Junction Blvd., on the border between the neighborhoods of Jackson Heights and Corona, dozens of street vendors make themselves known by the display of their wares and by their come-ons, spoken mostly in Spanish, to passersby. During a half-block walk north, on the eastern, sunnier, side of the boulevard, we find sidewalk vendors selling perfume and jewelry, wallets and mobile phone cases, masks arrayed like a collection of pinned butterflies and a yapping, battery-powered Dalmatian puppy. There’s plenty to snack on, too: meat-laden skewers, roasted nuts, tamales, ices on a stick and by the scoop.

Pies, both sweet and savory, are an essential component of the Greek cuisine. Each region in the country usually has several different takes on pita (πίτα, or pie, the plural being πίτες, or pites), which is enclosed either in pastry, most commonly phyllo, or using a different method that bypasses pastry altogether. Besides the fillings, the variation in pie recipes around Greece mostly comes down to the kinds of phyllo used: its ingredients and the technique of rolling it out. Then there’s also the question of how the phyllo is assembled or wrapped around the filling, before the pie is finally baked, fried or even grilled.

Growing up in Oaxaca, la gelatina rosita (“pinkish jelly”) was a biweekly ritual – every other Saturday, our mother would return from the market with this special dessert. It was so ingrained in our routine that we couldn’t imagine life without it. In fact, on a family trip to Mexico City, we were shocked to learn that gelatina rosita wasn’t readily available. Did they know what they were missing? It was only when we were older did we learn the proper name of this precious Oaxacan specialty: nicuatole. Some say its etymology can be traced back to Nahuatl (one of the many Indigenous languages spoken in ancient Mexico), specifically the words necuatl (“agave honey”) and atolli (“liquid corn”). While this may be true, it doesn’t quite portray what nicuatole is, not really.

Corn is so vital to Mexican cuisine and culture that we could scarcely avoid it even if we wanted to. Not that we would ever want to – one of the things we love most about dining in Mexico is the high likelihood that our meal will have a healthy dose of corn in one form or another. Take atole, a traditional beverage made of corn flour, fruit, spices, and milk or water, which is often sold alongside tamales, corn patties most often stuffed with meat or veggies, steamed in a corn husk or banana leaf. Wash down your corn with some corn; that’s the Mexican way.

Underneath the rumble of the 7 train in Corona, Tortilleria Nixtamal turns about 5,000 pounds of corn masa into 50,000 tortillas every single day. Stacks of them fill all the available shelf space in the unassuming storefront, as a lone conveyer belt spits out a continuous single-file row of perfect tortillas. Unlike mass-produced supermarket flour tortillas, or even the average corn tortilla at your local bodega, these are all made from real corn – no preservatives added – and they’re always fresh. Anything over a day or two old is turned into chips. When Tortilleria Nixtamal opened 10 years ago, real-deal fresh corn tortillas were impossible to find in New York, and stores had only recently begun to stock Mexican goods aside from the odd can of Ortega chiles.

At a typical pâtisserie orientale, the front window is often stacked with towers of sweets – honey-soaked visual merchandising to entice passersby to pop inside. Some pastry shops line their walls with colorful geometric tiles and Moorish arches, the icing on the Maghreb cake. Pâtisserie Orientale Journo goes for a decidedly more subtle approach. Though located a block from Marseille’s main drag, the Canèbiere, this unassuming shop is somewhat lost in the shuffle of the pedestrian Rue de Pavillon. The few tables scattered out front suggest that there’s food to be found inside but the open storefront is bare – save for a giant five-gallon water jug propped on a stool, with a hand-scrawled sign “citronnade – 2 euros” beside it. That’s all the advertising needed for a pastry shop that has survived by word of mouth for 60 years.

When we embarked on the ferryboat to the South Aegean island of Kea at Lavrio, about an hour’s drive from Athens, we didn’t see any of the tourists that typically fill ferries going to the Cyclades in summer. Traveling with the summer winds just an hour further, we seemed to slip through an invisible door into a world at once very close but far away in ethos. Many wealthy denizens of Attica, the peninsula that encompasses Athens, have built their summer homes here in a style that deviates from the famous blue-and-white of the Cyclades, incorporating local stones and looking somehow traditional and modern at the same time, blending into the local landscape. A big aspect of this landscape – yet another surprise, the greenness of the island – is the thousands of trees that make up the ancient oak forest carpeting Kea, whose acorns are undergoing a felicitous revival as a staple of local economic – and even culinary – life.