In Shanghai, there’s a time and a place for taking part in the city’s rough-and-tumble street food scene, but sometimes you want to eat out knowing that your bowl of noodles will not accidentally become someone’s ashtray or that you don’t have to elbow an elderly lady out of the way for a seat. Somewhere between the dive noodle stalls and the elegant confines of the city’s upscale banquet-style restaurants lies the holy grail of eating authentically: affordable local cuisine in a non-smoking, no grime, no-nonsense environment – with painted walls to boot! Meet the popular Shanghainese restaurant Jian Guo 328.

Dear Culinary Backstreets, In just about every restaurant or bar I’ve been to in Barcelona, I’ve seen a dish called “tortilla.” What exactly is a tortilla and can you recommend any places where they are done especially well? Although it would seem that much of the world imagines the inhabitants of Spain subsisting largely on paella, the truth of the matter is that it is the tortilla española, also known as tortilla de patatas (truita de patata in Catalan), that  really holds the place of honor in the hearts and stomachs of Spaniards. Often translated into English on menus as “potato omelet,” this hearty round cake of potatoes, eggs, olive oil and salt has nothing to do with the traditional French omelet, nor does it have anything in common with a Mexican tortilla. At its most basic, the Spanish tortilla is made by frying up a thick mass of sliced potatoes and eggs in olive oil and then slicing it into savory wedges.

Good service in China is a relative term, and the longer you live here, the lower your expectations sink. The Michelin Guide allegedly won’t deign to cross over the Hong Kong border into China because they refuse to sully their white-tablecloth reputation by doling out stars to restaurants with subpar service. But the inspectors must have never entered a Hai Di Lao Hot Pot, or they might have to change their tune.

Until we visited some of Istanbul’s shrines to the baked bean, we generally regarded the dish as something eaten out of a can beside railroad tracks. But Turkey takes this humble food, known as kuru fasulye, seriously; that means chefs in tall toques carefully ladling out golden beans in a rich red gravy onto monogrammed flatware, served by waiters wearing bowties and vests. Even in the least formal of Istanbul’s beaneries, the guy manning the pot has the air of a high priest who knows that his incantations alone conjure something unusually delicious out of a simple dry white legume. This is no hobo fare.

Dear Culinary Backstreets, I’ll have an eight-hour layover in Istanbul and was wondering if you have any suggestions for places to go for a good Turkish breakfast and lunch. I love to eat at small, local places serving authentic food. I would prefer restaurants in the Yeşilköy area, as I have to be back at Atatürk Airport to board an international flight (which I cannot afford to miss!).

To qualify as a Chinese Time-Honored Brand (老字号, lǎozìhào), shops must prove that they’ve been a profitable business since 1956. Only about 1,000 brands across the country have achieved this honor, an impressive number considering the tumult of the last 60 years in China and the damage to hundreds of historical national treasures. Among these government-endorsed venues is Da Hu Chun (大壶春), one of Shanghai’s oldest fried pork bun shops, which first opened in the 1930s, less than a decade after its specialty dish, shēngjiān mántou (生煎馒头), was created.

Editor’s note: This is the penultimate installment of “Best Bites of 2012,” a roundup of our top culinary experiences over the last year. Stay tuned for our final “Best Bites” dispatch, from Istanbul, tomorrow. Restaurant Roma We hadn’t planned on bringing in La Nochevieja at Restaurant Roma, but it was nearby and we didn’t feel up for public-transport adventures on New Year’s Eve. Situated on a quiet street in the upscale but untouristy Barcelona neighborhood of Sant Gervasi, Roma is thoroughly nondescript – a neighborhood joint frequented by neighborhood people of a certain age. The wood-paneled walls, racks of Maxim magazines and TV mounted in the corner kept our expectations pretty low.

If Lades, which means “wishbone” in Turkish, provided an actual wishbone alongside the usual post-meal wet wipe and toothpick, we’d close our eyes and make a wish that we could eat their tandır, or oven-roasted baby lamb, seven days a week. These large knots of tender, fragrant meat lined with a soft cushion of fat are the sort of high-calorie lunch that we might save for a special occasion, but Lades regulars take for granted.

In Mexico, sandwiches generally come in the form of the torta, usually made out of a white bread roll known as a bolillo that has been sliced in half and then filled to the brim with meat, avocado, tomato, onion and sliced jalapeño peppers. In Mexico City’s San Rafael neighborhood, however, a family-owned sandwich shop called La Vaca de Muchos Colores is doing its best to expand the city’s sandwich scene.

From a country that maintains a “national strategic pork reserve” – vast bunkers of frozen meat that can be released when the price of the commodity gets too high – one might not expect to find an impressive number of traditional vegetarian restaurants, but you’d be surprised. While exact numbers are hard to pin down in China, it is thought that around 20 percent of the Chinese consider themselves Buddhist, a number that tops out at around 280 million people. In culinary terms, that translates to hundreds of millions of would-be vegetarians – though, as in any religion, devotees interpret tenets at will, and most “vegetarians” in China enjoy a sprinkling of pork in their tofu to “add flavor.”

It is hard to identify exactly when the forgotten neck of Istanbul between Etiler and Arnavutköy became prime real estate. Not so long ago, overgrown green space alongside the road was interrupted by the occasional car wash and low-slung shanty; it was not so much a place as a road to other places. But now it seems this road is going places of its own. A private tennis club with a swimming pool shares a parking lot with Backyard, a café and restaurant with a big grassy yard filled with lounging parents and children wallowing in that rare Istanbul commodity: grass.

To call Tacos & Deli, a one-year-old family-owned spot in the popular nightlife district of Zona Rosa, small would be an understatement. The main dining area contains six little tables, a tiny kitchen, a taco station and a cashier stand, all of which are squeezed into a micro-sized area that in many other restaurants would probably end up being used as a broom closet.

When Yi Sheng Yue Wei opened on Yongkang Lu almost three years ago, its neighbors were pajama-clad retirees, a mahogany furniture workshop and the Shikumen History Museum – which, to be honest, is actually just one history buff’s storied alleyway house. Now the two-block street is one of the most laowai-gentrified in Shanghai, with bars run by French interns, coffee shops stocked with beans from Ethiopia and competing fish-and-chips shops. Rents have skyrocketed, and there’s even talk of transforming the thoroughfare into a pedestrian street. But amongst the hustle, bustle and inebriated foreigners, Yi Sheng Yue Wei remains, loyally serving the same home-style Cantonese food as it did when it first opened.

There is literally nothing like a bowl of steaming má là tang (麻辣烫) when Shanghai’s wet, cold winter sets in. In English, it translates to “mouth-numbing spicy soup,” and if that weren’t indication enough that it will get your sinuses going, then the fire-engine-red broth certainly is.

Earlier in 2012, Jing’an Villas – a square, block-sized 1930s-era housing area in the heart of downtown Shanghai – survived an ironic plan that called for permanently relocating all of its 3,000-plus residents in order to better “preserve” the historic neighborhood. Luckily, the plan was shot down in a party committee meeting. For now, at least, Jing’an Villas remains the perfect setting for trying longtang cai, simple, home-style alleyway food that features local favorites.