When Xisca Ferragut left Mallorca (the largest of the Balearic Islands, located in the Mediterranean Sea off the eastern coast of Spain) and moved to Barcelona, she had no intention of opening a restaurant. Having lost her job back in Mallorca, she had decided to study sign language and become an interpreter. Then her boyfriend, Dionis Ballester, showed up and as the two struggled to find work, they noticed something: there were literally NO Mallorcan restaurants in Barcelona.

As the legend goes, a 19th-century Catalan farmer was out experimenting in his fields when he came up with a new kind of longer, juicier green onion, the calçot. In creating the onion, the farmer produced much more than a new vegetable; he also paved the way for the rise of an idiosyncratic, and distinctly Catalan, cultural event.

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.

Spain has not traditionally been known as a country of great bread, although there are some exceptional old tahonas (bakeries) scattered around here and there. But after long decades of eating poor-quality breads, typically white or light bread with excessive additives, Spaniards are finally developing their taste for the staple. In fact, the culture of bread in Spain is in full fermentation right now.

Editor's Note: Sadly, this spot is now closed. Everyone knows that Germany and France can both make a mean loaf of bread. But what about Spain? When was the last time you heard someone say something like, “What this meal really needs is some delicious Spanish bread!” You’ve never heard anyone say that and the reason is that the bread in Spain is, with few exceptions, decidedly mediocre, with even the smallest bakeries producing the majority of their “fresh-baked” product using partially baked or frozen dough made in factories using industrial yeasts and preservatives.

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.

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?

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.

Through the Daily Beast, we’ve just been introduced to the literary character Pepe Carvalho, Barcelona’s “gastronome private eye.

If La Plata is good enough for Paul Hewson, it’s good enough for everyone. More commonly known by his stage name, Bono, Mr. Hewson ate here in June 2009 a few nights before kicking off U2’s 360° world tour at Camp Nou in Barcelona.

Viena is the love child of an Austrian ski lodge and a McDonald’s. This Catalan fast-food joint – which has become an obligatory foodie stop thanks to New York Times food writer Mark Bittman, who famously wrote that Viena’s flauta de jamón ibérico was the best sandwich he’d ever had – dishes up fast and delicious grub with a side of kitsch.

Can Paixano, the kind of timeless dive that could soon be extinct due to the rise of Western chains, is an obligatory stop for anyone wanting to taste a slice of the real Barcelona. And the bar’s location in Barceloneta, the traditional fishermen’s quarter where the old port meets the beach, provides the perfect setting.

Catalan owners, Filipino chefs and a menu offering comfort food inspired by the cooking of Iberian sailors: La Flauta, a restaurant-cum-tapas-bar that goes long both on good taste and good value, is an excellent reminder of the benefits of Barcelona’s being a port town.

While even glass-half-full types are calling Spain’s economic forecast gray, the food climate in the Catalan capital couldn’t be sunnier. With packed tables, new venues such as Tickets and 41˚, and Spain’s hottest restaurant, Can Roca (recently voted #2 in the world) just a stone’s throw away in Girona, Barcelona’s restaurant scene provides an elixir guaranteed to cure the eurozone’s worst economic hangovers. Interviewed recently on Spanish national television, legendary chef Ferran Adrià was asked by radio journalist Luis del Olmo, ¿Cómo se cocina la crisis? (How does one cook the crisis?) Adrià answered, “With innovation and taking risks.”

In many parts of the world, sweet red vermouth is assigned a supporting role on the liquor shelf, a neglected bit player occasionally dusted off to sing a tune or two. In Barcelona, however, the aperitif has played a starring role for ages, so much so that some places even serve the stuff on tap. That’s right. Vermouth. On tap.