If a gastronomia or delicatessen prepares good food, it can survive for decades. But if a gastronomia also promotes a social cause, there is a risk that clients will visit once to silence their consciences, and not return. At Sfizzicariello, a “social gastronomia,” the food is at once excellent, and the cause worthy. A group of 10 people with mental health disorders run the deli, an example of commitment but, above all, quality dishes that will keep people coming back. Here is one of the best eggplant Parmigiane in Naples, an exceptional endive pizza, and a number of unparalleled meatballs. Come for a quick snack, a long lunch break sitting at one of the few tables scattered about or to order take away. The environment is modern in design, with eight seats inside and four out.

The up-and-coming, terroir-obsessed wine distributor Os Goliardos is reached through a tiny alley that opens into a courtyard behind an apartment block in Campolide, a residential Lisbon neighborhood just north of the Amoreiras shopping mall. The company keeps a low profile, hiding Lisbon’s greatest wine storeroom in a narrow garage that counts several auto body shops as its neighbors. Since they keep odd hours, we were told to find a mechanic named Senhor Rui who would let us in with his key to pick up our order. We looked for him in a dark garage, where a man sat, listening to fado on the radio, beside a distressed Fiat. Wrong mechanic. Suddenly a large, smiling man in work clothes appeared in the yard jangling a set of keys.

Olivos Comida y Vinos is like an independent movie playing at a small cinema on a quiet street in Sants, a neighborhood just outside of Barcelona’s center. It leaves you with the impression of having had an unexpected, intimate connection with something personal and precious. They don’t have customers – they have fans. Decorated with plants and flowers in a comfortable setting of simple, natural materials, Olivos is full of thoughtful details (enough space between tables, no table cloths for green eating) and super-friendly service. The exquisite food follows a sustainable “slow food” philosophy, where products should be local and obtained in both a clean and ethical way, and everything is cooked with a highly professional hand. In Barcelona, where mainstream culinary trends, big hospitality groups and huge investments in interiors and PR are frequently the rule that moves the masses, the independent, honest spirit at Olivos is a treasure.

Sweet, fluffy and incredibly habit forming, yakiimo (roasted sweet potatoes) are an autumnal treat loved throughout Japan. But in a small corner of Setagaya, Tokyo’s largest ward, a dedicated shop bakes them year-round. Kept busy by a steady stream of visitors, all clutching tell-tale paper bags, Fuji has a national take on a traditional snack. The slow-baked yakiimo are often sold from slow-moving mini trucks equipped with onboard wood-burning ovens. As the trucks roll by, they fill the air with both a comforting smell and familiar song. Roasted on a bed of stones, the potatoes are commonly known as ishiyaki imo and once saved Japan from famine when rice crops failed in the 18th century. Served without butter or salt, it may seem a little simple to the untrained eye, but cooked right, the flavor and texture render any additions entirely obsolete.

Agapi Stavrakaki was born in Anogia, a mountain village on the island of Crete famous for producing fine produce and excellent musicians. Decades before she would open Raeti, a delightful restaurant in Athens’ Ambelokoipi neighborhood which pays homage to her island home, a 10-year-old Agapi worked by her grandmother’s side at her family’s vineyard in Anogia, cooking for the workers harvesting grapes and making wine. She and the other women would prepare huge quantities of food in enormous kettles. Despite being cooked in bulk, the food was always traditional, fresh and tasty – Cretans have high standards! Before continuing with Agapi’s story, a few things about Cretan cooking: One of the most legendary of Greece’s regional cuisines, it makes use of all the simple ingredients that are offered by nature with an open hand.

When a streetcar ran down Queens’ Metropolitan Avenue in the first half of the 20th century, soda fountains like Eddie’s Sweet Shop were commonplace in big cities and small towns across America. Today, this hundred-year-old corner gem on Metropolitan in the leafy, Tudor-style enclave of Forest Hills is one of the last of its kind left in the country, and it certainly shows its vintage. On summer afternoons, Eddie’s still fills up with crowds of happy Queens kids, and the diversity of the clientele reminds you that fortunately, it’s not the 1920s anymore. The shop itself, though, is practically unchanged – every piece of equipment behind the counter, from the shiny Frigidaire to the tiny metal cabinet hand-painted with the words “hot fudge,” could be from a museum.

For a century and a half, the building housing Guixot has taken on many personalities – though one thing has remained the same: It’s always housed some type of bar that also served food. Now a tapas bar celebrated for its sandwiches, brothers, partners and cheery owners Francisco and José Gutiérrez Murillo have been running the iconic eatery in the Raval neighborhood since 1986. Here we can find some of the more interesting sandwiches of the Old City, along with good tapas and a lunch menu of daily specials. Exuding a relaxed, familiar and friendly atmosphere, the space still keeps an old school look with its marble tables and thin iron columns from the past century dotting the interior. It makes good use of its walls, exhibiting paintings that seem to recall its previous life – and it’s had many.

We like to be comforted with a hearty stew after a long day, so we visited Senhor Palma's to see what is stewing today. It was pea and chouriço stew - ervilhas com chouriço - so of course we stayed to have some.

“What year did you marry your wife?” we ask Rafael Hernandez, known as El Negrito of Mercado Medellín, one Saturday afternoon at his vegetable stand. “I don’t know!” He breaks into uncontrollable laughter, “She knows though!” “What year did we get married, Gorda?” he asks the woman next to him. Her hair is tightly permed and her hands are ever-busy sorting vegetables and tallying accounts “I was 21 and you were 25, Negro – so more than 50 years,” Josefina says. Rafael, now 79, with a shock of white hair and an easy smile, happily bustles around his stand.

Saturday, late afternoon, Jackson Heights. In the shadows of the 7, the elevated train that runs along Roosevelt Ave., sunlight is already giving way to street light; music spills from passing cars and lively watering holes; a few men and women hurry along on neglected errands. More than a few step into La Gran Via Bakery, lured by a show-stopping array of cakes and a long line of display cases filled with individually portioned pastries. At the back counter, Betsy Leites is poised, pastry bag in hand, over a bright white tres leches cake rimmed with strawberries and peaches. She squeezes out a cursive "Feliz Cumpleaños."

We are in the Vasto district, a difficult to navigate maze of narrow streets that criss and cross, a market area squashed between Naples’ central station and Centro Direzionale, the business district. The district’s Via Nazionale, a street adjacent to the station, is a shrine to local gastronomic treasures, and we consider it a true paradise for lovers of good food. It’s a jewelry box of flavors, ideas, and unique and original products. The daily street market on Via Ferrara, another local artery, is one of the city’s most colorful and fascinating – mentioned several times in renowned author Elena Ferrante’s “My Brilliant Rriend.” It was here, in 2016, that Dario Troise brought to life a project 15 years, if not centuries, in the making: a panini bar that serves only cuzzetiello (which roughly translates to bread bowl sandwiches).

Based on NYC Media’s new food TV series, “Native Dish: United Flavors of NYC,” Culinary Backstreets brings you a behind-the-scenes look at some of the New Yorkers featured in these short videos. The series, which aims to celebrate New York City immigrants from all over the world, focuses on one individual and one dish at a time as a means through which to explore the myriad cuisines represented in the city and the people who make them. This month, we are spotlighting Upi Yuliastuti, an Indonesian immigrant from the Pandang region of Sumatra, who has been the chef at Upi Jaya restaurant for 15 years. Through her daughter Tika, we hear about Upi's dedication to her kitchen, her desire to share Indonesian food with the city and what sets her beef rendang apart from all the other eateries in town.

You would think Sérgio Oliveira, the owner of Conga in Porto and the secret-keeper of its legendary recipe for bifanas, would be tired of the restaurant’s signature dish. But you’d be wrong. “As much as I try not to eat it, I cannot. It is impossible,” he says. "One always eats it; there is no chance not to.” It’s a simple but addictive dish. Pork, cooked all day in a mysterious spicy sauce and stuffed into a piece of bread that looks a bit like a roll– at first glance, it does not seem to impress. But Porto continues to hide the best and tastiest of its secrets in the simplest things in life. "It was my father who invented the famous bifanas with this wonderful sauce,” says Sérgio, who’s been running Conga the last eight years. It’s been more than 40 years since Manuel Oliveira returned to Portugal from Angola and opened the restaurant in 1976.

The first few blocks of Baruthane are lined with a smattering of restaurants, barbers, television repair shops and dry cleaners, though in recent years a flurry of third-wave coffee shops and bars has arrived on the street. While this is a positive development for the young adults that patronize these establishments, there is the inevitable concern that their proliferation will cause a spike in rents and tarnish the quaint character of this beloved neighborhood. It is for this reason that we were thrilled to see a new establishment open up on Baruthane that reflects the classic small-business character that makes this area so special. Köy Börek is run by Abdullah Kral, a cheerful 53-year-old teddy bear of a man who makes some of the most delicious börek we’ve ever had – and we’ve had a lot. (Kral means king in Turkish, and we are prepared to crown Abdullah bey the king of börek.)

Speed down the National Road till you’re in sight of Rendis Market, then follow the trucks off the highway and into a vast depot of concrete sheds. Though the trucks are there to pick up and deliver fruits and veg from all over Greece to supermarkets, grocers’ and farmers’ markets, we pulled over and started shop-hopping. Rendis, an industrial district of small factories, warehouses and train yards on the west side of Athens, has never been an area one would go for pleasure.