We like to travel on a smaller scale. Forget countries and cities, for us the neighborhood is the ideal unit of exploration. Celebrating neighborhood life and businesses is, of course, essential to what we do as Culinary Backstreets. Since our founding in 2012, we’ve been dedicated to publishing the stories of unsung local culinary heroes and visiting them on our food walks, particularly in neighborhoods that are off the beaten path. Plus, we recognize that tourism, while a justifiably important economic force in many cities, can devastate the urban ecosystem if not distributed responsibly into neighborhoods otherwise neglected by the travel industry. To help that process along, two years ago we launched an annual “Neighborhoods to Visit” guide, featuring areas off the main tourist trail from all the cities that we cover.

Portugal’s great 19th-century novelist José Maria de Eça de Queiroz was ahead of his time in many ways, dealing with raw subjects like incest, abortion and priestly sex crimes in his books. Yet Eça de Queiroz, a renowned bon viveur, also peppered his writings with less controversial culinary references. In fact, one of his best-loved scenes features the main character tucking into roast chicken and rice with fava beans. It’s a fictional meal that Restaurante de Tormes, a restaurant in the hamlet of Santa Cruz do Douro dedicated to serving dishes associated with the author, has turned into a reality.

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.

It was our first Tbilisi summer stroll down the city’s main drag, Rustaveli Avenue; two sweaty, newly arrived pie-eyed tourists tripping on the 2001 reality. There were billboards advertising the recent kidnapping of a Lebanese businessman, policemen in crumpled gray uniforms extorting money from random motorists with a wag of their batons, and at the top of the street, a former luxury hotel looking like a vertical shanty was full of displaced Georgians from Abkhazia. Parched and cotton-mouthed, we entered a café of sorts for cool respite. The room had high ceilings, was stark and all marble-tiled, including the long, wide bar. A splendid social-realism mosaic of women, grapes and wine was laid into the back wall. The counter was decorated with a few tin ashtrays and a spinning rack holding several tall cone-shaped beakers filled with technicolored syrups.

As winter descends over Istanbul, cloaking the city in gray rain clouds that make for beautiful sunsets but unpleasant commutes, we flee the many open-air eating options in the city for cozier digs, replacing outdoor meyhane feasts and rakı toasts with homey bowls of lentil soup and steaming cups of tea. Yet when we’re craving a place that is warm in ways beyond food, the average Istanbul lokanta often leaves something to be desired. Which is why, on a recent rainy Friday evening, we were pleasantly surprised to stumble upon Galaktion, a Georgian restaurant on a cobbled side street off Taksim Square, smack dab between Istiklal Caddesi and Sıraselviler Caddesi.

Despite the image that Greece wants to sell the world as a holiday destination of eternal summer with beautiful beaches and clear water, the fact remains that it is a very mountainous country – almost a third of Greek land consists of hills and mountains. Most are forested, hosting a great diversity of ecosystems that offer fertile ground for mushrooms in particular. That said, mushrooms don’t feature prominently in traditional Greek dishes, and many people avoid them altogether, even the common cultivated varieties, from fear of getting sick. For many, meanwhile, mushrooms don’t evoke the best memories: During the 70s and 80s, the tinned variety was mainly used in cooking, as fresh cultivated mushrooms were rare and expensive.

Lunch at Casa Guedes is one of our favorite culinary rituals in Porto: After snagging a seat at the bar during the midday rush, we sit, mesmerized, as Mr. Cesar nimbly cuts slices of roasted pork shank, then places them on bread and moistens it all with his secret sauce. While not the only item on the menu, the famous sande de pernil (roast pork sandwich) is Casa Guedes’s raison d’être. After taking in Mr. Cesar’s entrancing sandwich-making choreography, we order the upgraded version of the sande, which is topped with gooey queijo Serra da Estrela, a creamy sheep’s milk cheese. Seating at this humble and low-cost eatery used to be minimal, and Casa Guedes’s popularity had long outstripped its capacity – fans could be found waiting patiently in queues stretching down the block.

Lunch at Casa Guedes is one of our favorite culinary rituals in Porto: After snagging a seat at the bar during the midday rush, we sit, mesmerized, as Mr. Cesar nimbly cuts slices of roasted pork shank, then places them on bread and moistens it all with his secret sauce. While not the only item on the menu, the famous sande de pernil (roast pork sandwich) is Casa Guedes’s raison d’être. After taking in Mr. Cesar’s entrancing sandwich-making choreography, we order the upgraded version of the sande, which is topped with gooey queijo Serra da Estrela, a creamy sheep’s milk cheese. Seating at this humble and low-cost eatery used to be minimal, and Casa Guedes’s popularity had long outstripped its capacity – fans could be found waiting patiently in queues stretching down the block.

The excavations at Oplontis, located in the modern city of Torre Annunziata, are often overlooked in favor of its much larger, much grander neighbor: Pompeii. Yet like all little-known things, this archeological site is full of incredible surprises, like the magnificent villa said to have belonged to Poppaea Sabina, the second wife of the Emperor Nero. A UNESCO World Heritage Site since 1997, the villa is certainly worth a visit (plus, you’ll avoid the tourists who come from far and wide to invade Pompeii). And after having “discovered” Oplontis, there is a small gastronomic treasure to be discovered: DocSicil.

In a nation with so many baking and confectionary traditions, it’s surprising that one of the most popular cakes – the bolo-rei – was imported from another country (a sweet tooth does not discriminate, apparently). Translated as “king cake,” the bolo-rei was brought to Portugal from Toulouse, France, by one of the oldest bakeries in Lisbon, Confeitaria Nacional. Over the years, the bolo-rei has become a staple during the festive season: ubiquitous on the table before, during and after Christmas and New Year, and certainly a must for Dia de Reis (Epiphany) on January 6, when it’s baked in its fanciest form with a nougat crown (made of caramel and almonds) and fios de ovos (“egg threads,” or eggs drawn into thin strands and boiled in sugar syrup).