Churros, the long, skinny, crenellated, sweet fried crullers made from just flour, water and salt, have been enjoyed for centuries in Spain, with hot chocolate and without. However, in Barcelona, xurros, as they are called in Catalan, are becoming an endangered species. In recent years, more than half of the xurrerias in the city have disappeared. Many of the old-timer xurreros who still survive have the odds stacked against them: permit renewal for a street stall is near impossible; rent has become prohibitively expensive and continues to increase; or required updates to old infrastructure might prove extremely costly. However, we know of one young newcomer who has emerged with fresh energy and inspiration, incorporating lessons from the masters in his creative take on xurros. The best way to save this endangered species is to eat it, so here are our five favorite xurrerias, which make these star-shaped doughnuts with great care – and with delicious results that are worth seeking out.

By the name of the place, you’d expect the Sütçüler (“Milkmen” in English) district near Isparta in southern Turkey to be a dairyland paradise, thick on the ground with men carrying buckets sloshing fresh milk, cheese wheels stacked in cool dark sheds, verdant hills freckled with cows. But there are no milkmen in Sütçüler, at least not in the wintertime. The area’s name actually has nothing to do with anything going on in Sütçüler itself.

Editor's note: For our last stop on CB's Global Bar Crawl this week, we're pulling up a stool at our favorite mezcal bars in Mexico City, kicking back and savoring every last drop. Para todo mal, mezcal. Para todo bien, también. Y si no tiene remedio, tómate litro y medio. For everything bad, mezcal. For everything good, the same. And if that doesn’t help, drink a liter and a half. – Popular saying among mezcal lovers.

Editor's note: Our third installment in the Global Bar Crawl takes us to Barcelona, where gin continues to be the drink of choice among locals. Tomorrow we head to a spot in Istanbul where you can spend an evening visiting a number of bars, all without leaving the building. Spain is a country that loves a long-drink – alcohol in combination with a soft drink, refreshing and open to invention and reinvention. On the heels of creative gastronomy’s efflorescence in recent years, many old drinks, cuisines and forgotten ingredients have returned, revived through new and more sophisticated techniques and interpretations. The gin and tonic, called gintonic here, is one such Spanish obsession, and all that ingenuity and focus have gone into taking this highball to the next level.

Editor's note: In a recent New York Times article, Joshua Hammer wrote about a tour that Nobel Laureate Orhan Pamuk gave him through the author's native city and his personal history there. We were delighted to read that one of Pamuk's favorite places is Vefa Bozacısı, which is one of ours too (and also a stop on the Old City culinary walk). After our first taste, we were not quite ready to sing the praises of boza, a thick, almost pudding-like drink made from fermented millet. But the experience stuck with us. What is that flavor? Something like cross between Russian kvass (a fermented drink made from rye bread) and applesauce may be the best way to describe it. As it did to us, the drink may haunt you, much like the call of the itinerant boza vendors who wander the streets of Istanbul during the winter months calling out a long, mournful “booooo-zahhh.”

Morro Fi and Mitja Vida are two relatively new entrants to Barcelona’s vermuteo (“vermouthing”) culture, whose history stretches back to the turn of the last century. These two bars are the product of nostalgia for a bygone era fused with the social network- and urban design-driven present. The vermouth tradition in Barcelona was started in the early 20th century by Flaminio Mezzalama, who represented the Italian company Martini & Rossi in Spain, at his fabulous modernist Bar Torino. Vermut began to be produced in Catalonia, and in the following decades, the province developed its own style of the aromatic fortified drink. At the same time, the custom arose of having vermut before lunch with some pickles to whet one’s appetite. That tradition faded over time but has emerged in recent years as a kind of retro, hipster-approved pastime.

Fried tortillas, stuffed and sauced: enchiladas are simple in concept, but they come in a seemingly endless variety, depending on region and ingredients. The tortillas might be made of corn or wheat flour, and they could be stuffed with all manner of meat or vegetables (or both), but the sauce – or salsa – is really what it all comes down to.

“I’m not a missionary, but I am not doing this just to make a profit. People must see that there is mantı outside of Kayseri, there’s Crimean Tatar mantı, as well,” explained Gülben Resuloğlu, in front of her restaurant in the leafy Feneryolu district of Istanbul’s Asian Side.If Martha Stewart were in the mantı (also known as “Turkish ravioli”) business, her place would look just like Gülbi’s – meticulously decorated in pastels, white and floral prints. Everything matched, even the two neatly dressed women who welcomed us: Gülben (the Gülbi in question) and her sister, Leyla. But kept just behind tidy appearances, we discovered, is the pain of being Tatar. We’re convinced that this identity, which was forged in the fire of dispersal and diaspora, made the food taste better.

It’s been more than half a century now since The Beatles formed, and their worldwide popularity continues unabated. In Japan especially, the band’s presence and influence were outsized almost from the beginning, and John Lennon’s marriage to Yoko Ono cemented the band’s place in Japanese culture.

Fried pig’s ears fortified with garlic and parsley, veal cheek and tongue laced with vinaigrette, hefty veal and pork meatballs, creamy artichoke or eggplant omelets or a hearty bocadillo of marinated tuna, red pepper, anchovies and olives: these esmorzars de forquilla, or “fork breakfasts,” are how a Catalonian might start his day – especially at Can Ros, a tapas-and-bocadillos joint that’s open every day from 7 a.m. until midnight. Office workers might drop by for a coffee at mid-morning, followed by the lunch crowd, which takes over from 2 p.m. to 4 p.m. Dinner, of course, lasts well into the night. It’s breakfast, however, that has made Can Ros most popular among locals.

An indispensable part of celebrations, cava, the Spanish sparkling wine, is just the drink for ringing in the New Year – though we’re happy to find other reasons to raise a glass of the stuff any day of the week. Cava is produced using the same méthode traditionnelle that is used for French champagne: after the base wine is fermented from the pressing, it’s bottled, usually with a mixture of sugar and yeast, to undergo a second fermentation to produce that festive fizz.

A hidden culinary sanctuary, El Passadís del Pep may be located in one of the most visited quarters of Barcelona, but it’s out of sight of anyone who isn’t looking for it. Once you go down the long corridor that leads to the restaurant, you don’t need to do anything, and that includes choosing what to eat. From the moment you sit down, the “house” offers you your first bottle of cava, and the celebration of food and life begins. There is no menu and there are no “daily specials,” just whatever Joan Manubens and his team decide to cook that day.

Editor’s note: This is the final installment of “Best Bites of 2013,” a roundup of our top culinary experiences over the last year. Be sure to check out the "best bites" in all the other cities CB covers. Breakfast in Erzincan We were strangers in a strange land – eastern Turkey’s Erzincan, to be exact – and Yalçın Kaya welcomed us into his cheese shop with such gracious fervor that it didn’t surprise us to find out that this Anatolian cheesemonger moonlights as an imam.

Editor’s note: This post is the penultimate installment of “Best Bites of 2013,” a roundup of our top culinary experiences over the last year. Be sure to check out the “Best Bites” from all of the cities Culinary Backstreets covers. To Rodi Tucked into a small corner of a working-class residential suburb, with unimpressive décor reminiscent of a local souvlaki joint, the Armenian-Turkish restaurant To Rodi is further evidence that appearances can be deceiving.

Editor’s note: This post is the fourth installment of “Best Bites of 2013,” a roundup of our top culinary experiences over the last year. Stay tuned for “Best Bites” from all of the cities Culinary Backstreets covers. Hilaria Gastrobar We visited this restaurant on revitalized Madero Street downtown just a few months after it opened, and we were immediately won over by the food and beer selection.