In 1977, just two years after the death of Franco, the great Catalan gourmet Manuel Vázquez Montalbán published a book titled L’art de manjar en Catalunya (The Art of Eating in Catalonia). The book, as well as the prologue written by Montalbán’s mentor Néstor Luján, rang the alarm bells, claiming that authentic Catalan cuisine was in grave danger and on the brink of disappearance. As Montalbán saw it, the unique Catalan culinary identity has been reduced to a few ubiquitous dishes: pan a la Catalan (bread with tomato pulp and ham) and rabbit with aioli. This demise was due, in his opinion, to the frenzied pace of modern life, the lack of high-quality ingredients, the ignorance of both restaurateurs and tourists regarding what good cuisine, not to mention true Catalan cooking, looks and tastes like and, of course, the Franco regime’s efforts at suppressing regional identities.

“We may find in the long run that tinned food is a deadlier weapon than the machine-gun,” wrote George Orwell. He knew quite a lot about poor diets, as he came to Catalonia in 1936 to fight against fascism during the Spanish Civil War. He joined the leftist political party and then a militia that fought on the Aragón front for six months, so it’s quite likely that he had tinned food at some point – but only on rare luckier days. In his war diary, Homage to Catalonia (1938), he wrote about craving food at the front as well as many other remarkable experiences that he endured in that period.

After last week’s horrific terror attack, Barcelona’s Las Ramblas are back to life: candles, flowers and messages written on any available surface share the place with a dense river of humanity walking along the boulevard or having a coffee in one of its terraces. Instead of giving in to fear or hate, Barcelonans have made a defiant show of sticking to their summer routine of going out and taking advantage of their city’s abundant outdoor spaces, turning them into places of healing. With this response in mind, we dedicate our guide to outdoor dining in Barcelona to the victims of last week’s attack and to the multitudes of people that, in all their cultural diversity, always were and will be the peaceful essence of Las Ramblas de Barcelona.

While kafeneio literally means “coffee shop” in Greek, the word is often used for establishments which offer much more than a jolt of caffeine, whereas straight-up coffee shops are nowadays referred to as “cafes.” Back in the old days and in smaller towns and villages, the kafeneio was the men’s local meeting and eating place, where they would exchange ideas about politics and life, play backgammon and cards or just hang out. That bygone concept is what Giorgos, the owner of Stoa tou Agathona, had in mind when he opened up shop in the heart of the commercial triangle in Athens, just a stone’s throw away from bustling St. Irene Square and Eolou Street.

Jordi Piquer opened his popular restaurant in 1968 on an auspicious day: April 23, a holiday that honors his namesake saint. Saint Jordi must have been looking down on Piquer and his dedicated customers when the restaurateur decided to sell his establishment in 1986: three trusted employees banded together to buy it, keeping the Sant Gervasi neighborhood institution in business. A fine example of a classic 20th-century Barcelona restaurant, Casa Jordi is decorated in the old masía (traditional Catalan farmhouse) style over two floors but adapted to urban dimensions, meaning that there are fewer intimate corners but larger, more flexible rooms with tables for groups.

At the beginning, Gelida was just a bodega where Joan Llopart i Figueres, who came from the village of Gelida in Penedés, offered Catalan wine, cold cuts and a few traditional Catalan dishes cooked by his grandmother, like butifarra amb mongetas (boiled sausage with beans). Llopart i Figueres and his wife worked here until they were in their 80s. They were succeeded by their two children, Teresa and Alberto, who have always been involved in the family business and who continue to run the place today alongside their respective spouses, Josep and Luci. Alberto and Luci’s son, Gerard, helps to manage the restaurant, and Laura and Santi, family friends who live nearby, joined the team in recent years as dining room manager and chef.

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.

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?

On Serifos island, local word-of-mouth advice on where to eat real Greek home cooked food – at excellent prices – will take you to the end of a beach road, a dirt path bordering the turquoise sea. Around a slight bend on a corner clearing, a dozen or so mismatched, aged wooden tables and chairs strewn in front of whitewashed house are simply lit by a string of light bulbs hanging between two thick tamarisk trees. Here, 83-year-old Kyria (Mrs.) Margarita has faithfully taken orders, cooked every dish and welcomed her summer guests for more than three decades. Hers is the prototypical traditional Greek island taverna.

Despite the 1970s-era sign outside that says Granja (farm) and the red letters spelling “Bar” inside, you can’t really tell what this place is until you open the menu: a temple of “neighborhood haute-cuisine.” The food at Granja Elena sounds simple but tastes rich and complex. The restaurant is a family business, now run by the third generation – Borja, Patricia and Guillermo Sierra Calvo – in the same barrio in which it was founded in 1974, La Marina del Port. This modern neighborhood is part residential and part industrial, a bit far from Barcelona’s center, located near the merchant port behind Montjuic and on the way to the airport.

Thessaloniki, the capital of Greek Macedonia and the country’s second largest metropolis after Athens, 500 km to the south, is a youth-loving, vibrant city that never sleeps – and always eats. Most locals here are friendly, laid-back, natural-born foodies who love going out and enjoying good wine and tsipouro. It’s a city with a very long history of culinary hospitality. Founded by King Cassandros in 315 BC and named after Thessalonike, his wife – half-sister of Alexander The Great – it’s referred to by Greeks as symprotevousa, “co-capital,” because of its historical status as a co-reigning city of the Byzantine Empire, along with Constantinople. In 1492 the city welcomed a large number of Jews expelled from the Iberian Peninsula.

Since the late 18th century, this quiet street corner in the salty seaside neighborhood of La Barceloneta has borne the name Can Solé. The long history of this tradition-steeped restaurant began with Gregorio Solé, owner of a shop of the same name, which sold soaps, oils and other sundries. In 1903, the space was sold to Josep Homs, who kept the name above the door and converted the shop into a restaurant, setting in motion a 113-year trajectory – from fisherman's tavern of humble stature to famous culinary institution, offering some of the best classic Catalan cooking, rice dishes and seafood in Barcelona.

Visiting the Jamaica plant and flower market is one of our favorite activities in Mexico City; we love getting lost in its green alleys and never fail to emerge with at least one new plant and a beautiful bouquet of flowers. And of course, we’re always on the lookout for new places to eat. Our favorite barbacoa joint is in this market, but when we want a different experience we head to the huarache alley, where several stalls offer this tasty Mexican specialty.

Three humble ingredients – potato, cabbage and bacon – that’s all it takes to cook trinxat, the quintessential Catalan wintertime comfort dish. Potatoes and cabbage are boiled and mixed with fried bacon, and everything is cooked as a mash in a pan until it resembles a potato omelet. Its simple ingredients and even simpler preparation are exactly what make this dish so delicious.

At first glance, the Gràcia district of Barcelona appears to be the gatekeeper of the resurgent Catalan identity: “Free Catalonia!” graffiti scrawled in the backstreets, Catalan flags flying from so many balconies, the distinct sound of the Catalan language heard in cafés and eateries.