When the couple Juan Pérez Figueras and Mercè Roselló bought in 1991 what is now Restaurante Agullers, it was an old run-down bar in the inner streets of Born, a neighborhood near the Port Vell area. “When I got the place it was totally ruined,” Juan explains. They decided to keep open only a long and narrow front section, creating a small bar-restaurant that specialized in fresh fish. All food was made in front of the clients, on a tiny grill behind the bar. This miniscule spot offering grilled fresh fish really struck a chord, and by the end of its first decade in business, people were lining up at the door.

You are motionless, stuck in a traffic jam after a long day at work while your stomach growls. You know the rest of the family will be hungry when you get home and that the fridge is empty and sad. Shopping and cooking is out of the question, so you turn onto a Vera side street, zig-zag through one-way lanes to Tatishvili Street, double park, and run into a tiny gastronomic oasis that has been saving lives like yours for nearly a decade. Its name is Tartan. Located in a step-down ground-floor apartment, takeout cafeterias don’t get homier than this. The front room is taken up with a long counter of refrigerated display cases half filled with enough ready-made dishes to lay down a feast when you get home.

One tip often given to travelers is to look for restaurants full of locals. In fact, we do the same thing when dining out in Naples: If we see a spot packed with groups of employees or policemen on their lunch break, it’s almost a guarantee that we’ll eat well. Trattoria Avellinese, the late Peppino (Giuseppe) Cipriano’s restaurant near the central train station, is one place that’s always crowded with Neapolitans. Moreover, we can personally testify that this trattoria is a local favorite. Growing up, we lived near Piazza Garibaldi, and whenever our family went out for lunch – which, to tell the truth, wasn’t that often – we went to Peppino’s place.

When Crescer, a non-profit association focused on the social integration of Lisbon’s vulnerable populations, was tasked by City Hall to create a restaurant that would serve the homeless three years ago, the association’s top brass had another idea. “If you give a man a fish, he eats for a day. If you teach a man to fish, he eats for a lifetime.” With this saying as their guiding philosophy, Crescer proposed a different venture: a restaurant where the homeless could gain professional experience and training that would allow them to integrate into the community and find a job. In other words, tools for a better future.

In the late 19th and early 20th centuries, Italians – particularly southern Italians – immigrated to the United States in droves. Seeking their fortune in a distant land, they boarded ships with cardboard suitcases containing only a few clothes. But there was no shortage of good food in those suitcases: bread, cheese and even soppressata, cured pork salami made with the best pieces of the pig (and thus low in fat content), a perennial favorite in southern Italy. Alas, once they arrived on American soil after the long journey, their soppressate were seized because of a law prohibiting the import of cured meat, among other meat products (a ban that still exists today).

Vegetables often get short shrift at restaurants – greens, legumes and tubers are relegated to the same tired side dishes, or just one component of many in a generic main, subsumed by the dish’s other ingredients. Not so at GatBlau (literally BlueCat in Catalan), located in the Left Eixample. This restaurant is a shrine to vegetables, showing them anew in all their complexity. Here, the personality of a parsnip, a kohlrabi or any other delicious weirdo from the garden is taken to the next level, refashioned into carpaccio, cake or even rillettes.

Avli is one of those places you have to be introduced to by someone who’s already been there. Although a sign does exist above its narrow metal door, there’s so much graffiti on either side of it, you could walk right by even if you had the address firmly in your hand or mind. Once inside, if you’re the first customer, you still might think you’ve made a mistake. Avli means “courtyard,” but this one is narrow, much more like a back alley. Blue doors and shuttered windows the same shade as the Greek flag pierce the right wall, the left has a few potted plants and three plump alley cats comfortably ensconced on the old-fashioned rush-seated taverna chairs.

Editor’s note: Tara Milutis, an American filmmaker based in Istanbul, shares the inspiration behind her new short film “Meet Me in Yusufpaşa,” which tells the story of Istanbul’s Yusufpaşa neighborhood, where food knits communities together and expresses the experience of migration and assimilation. When I first visited Istanbul in the spring of 2016, I was warned against going to areas in the Fatih district that were away from standard tourist paths. “Fatih is dangerous” and “That’s where ISIS fighters stay when they’re coming through Turkey” were some of the remarks I heard when expressing my interest in exploring this part of the city.

Imagine the most extraordinary location for a vineyard that you can. Got an image in mind? Well, we think Cantine dell’Averno, a four-hectare vineyard in Pozzuoli, has it beat: Not only are its vines growing inside the caldera of a volcano that is theoretically still active, but they also surround the ruins of a Greek temple. We are on the shores of Lake Avernus, a volcanic lake that formed thousands of years ago and is part of the wider Campanian volcanic arc, which includes the Phlegraean Fields. It’s a place shrouded in an aura of mystery – legends and tales about this somewhat eerie body of water have been passed down since antiquity.

It’s a crisp and cold winter morning in Alentejo. We are in Mora, a one-and-a-half-hour drive from Lisbon, to visit Susana Esteban’s winery, a very simple adega where her award-winning wines are made. Susana welcomes us at the door and leads us inside, where, sitting among the barrels, we taste her wines. They leave a strong impression on us, and not just because of the early hour – the wines have a distinct personality, one that’s formed on the vine. Yet when we peek outside, there are no vineyards in sight, only oak and cork trees. That’s because Susana grows her grapes in Serra de São Mamede, a mountain range in Portalegre, one-hour east of Mora and close to the Spanish border.

The wine harvest is about timing. The time it takes for a grape to ripen to optimal sweetness, the moment they are cut from the vine, the days or weeks that each mix of crushed grapes and juice sits in fermentation tanks or oak barrels. Timing is everything and to get it right, you not only have to be obsessed with accuracy, but also have a passion for perfection. Alejandra Cordero, the winemaker at Tres Raices, a winery in Dolores Hildago, located in the central Mexican state of Guanajuato, has both. Wearing a black lab coat, her hair in a tight bun and her hands stained ruddy red with wine, Cordero is testing the sugar levels of the latest batch of Tres Raices wine. This year’s harvest went fast. There was little summer rain and the grapes matured quickly. They started cutting in July and were finished by the start of September. Timing was vital.

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.

The typical Neapolitan trattoria is a place where you go to eat like you would at home: the cook buys everything fresh in the morning, just like at home, and then spends the rest of the day in the kitchen, which he rules like a maestro. For the quintessential trattoria experience, we head to Fuorigrotta, a working-class district on the west side of Naples. There, close to the border with the seaside suburb of Bagnoli and not far from the Cavalleggeri Aosta metro stop, stands Cucina da Vittorio, a small trattoria with a few tables and a steady rotation of regular customers.

Zé Paulo Rocha was born in September, 22 years ago. By December of that year, he was already sleeping on top of a chest freezer in his parents’ tasca, right behind Rossio, one of Lisbon’s main squares. Like so many tasca owners in the Portuguese capital, they had come to Lisbon from northern Portugal’s Minho region years before. As a young teenager, Zé Paulo used to help with the service while his mother cooked and his father ran the business behind the counter, the traditional family tasca format. His professional fate was sealed from the beginning.

On our Hidden Flavors of the Hillside walk in Lisbon, we sample charcoal-grilled piri piri chicken paired with house-made hot sauces, whose recipes traveled to Lisbon from Angola and Mozambique after the 1974 revolution. So, how hot can you go?