Dear Culinary Backstreets, I’ll be in Spain during the December holidays and I’m wondering if Barcelonans eat any special meal on Christmas? If so, what is it and where in the city could I try it?

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.

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.

We can’t prove it, but we suspect a network of tunnels lies underground in Beyoğlu that connects most of the meyhanes of Asmalımescit and Nevizade Sokak to the same mediocre kitchen, resulting in unexceptional mezes at scores of venues in this dining district. Following a number of tips, our search for a standout meyhane led us to the unassuming Asmalı Cavit on Asmalımescit Caddesi, where we’ve consistently had outstanding food. This traditional meyhane bucks the trend toward mediocrity with subtle but significant tweaks that, for us, make the meal.

There are places that have been around so long that they've become emblematic of a city’s entire eating culture. In Athens, Stani (meaning "sheepfold" or "barnyard," depending on your definition) is certainly one of them. It may have a rustic-sounding name, but this wonderful, old-fashioned dairy bar – in business since 1931 – is an urban fixture.

The arrival of fall always finds us heading instinctively, like salmon swimming towards their ancestral headwaters, to the Balık Pazarı, Beyoğlu’s historic fish market. Autumn is quince season in Turkey and that means the appearance – for a limited time only – of one of our favorite desserts, ayva tatlısı (literally meaning “quince dessert,” although “quince in syrup” might be more accurate). Nestled in the fish market is Sakarya Tatlıcısı, a pastry and sweets shop with old-world charm that is one of our top stops for this dessert. The apple-like quince is one of those complicated, mysterious fruits that take on a new life when cooked. Raw, quinces are often astringent and inedible.

The large banner in La Nena chocolatería proclaiming “No Hay Alcohol” (strung up between a rocking horse and a wooden toy kitchen) makes it fairly clear that this is not a place for sophisticated conversation and cocktails. That doesn’t mean that La Nena (which means “The Girl” in Catalan) doesn’t cater to any other vices. Indeed, its delicious homemade cakes, pastries, hot chocolates and savory snacks tempt the residents of Barcelona’s Gràcia neighborhood on a daily basis.