It’s difficult to imagine a job where a major skill set is eating a vast amount of food and becoming as large as possible. Yet sumo wrestlers, in an effort to bulk up and to be able to throw their weight around in the ring, consume enormous amounts of protein-rich, calorie-heavy meals – primarily in a dish called chanko nabe (a one-dish hotpot) – hoping to do just that. At Chanko Dojo, diners are encouraged to fill up as much as possible as they soak up sumo culture. (For another eatery devoted to wrestling, read our review of this Mexico City spot.)

Some islands, Mykonos and Santorini for example, are known for their temples of gastronomy. Others, like Tinos, Milos, Syros and Sifnos, possess solid reputations for uniformly excellent tavernas. Until recently, Andros, a green anomaly in the treeless, windswept Cycladic chain, had two main attractions for tourists: a world-class modern art museum and a network of well-maintained hiking trails. You could get a decent meal after you’d seen the exhibition in Hora or trekked up to a 1,000-year-old monastery or down a river lined with water mills, but it wouldn’t be something to write home or tweet about.

It’s October and mushroom season in many parts of Europe, but if you were hoping for anything like Genoa’s Porcini Festival in Athens, you’re out of luck. But don’t despair: ‘shrooms, wild and cultivated, can be found; it just takes a little sleuthing.

On recent visits to Madrid, we’ve noticed that a new breed of food market has taken hold of the city’s attention. While the traditional kind with food stalls slowly disappears, vibrant, culture-focused gastromarkets are booming. In addition to great food, they offer a mix of businesses, along with cooking demos, live music, exhibitions – the list goes on. In 2009, the private society El Gastródomo de San Miguel refurbished a beautiful building that was built in 1916 and located very close to Plaza Mayor. It was opened as the “culinary space” Mercado de San Miguel. Though the initial inspiration was Barcelona’s La Boquería, San Miguel is utterly different, with its own colorful, unique personality. The market is dedicated not just to selling quality seasonal foods, but also to allowing visitors to enjoy them in situ, at tables and chairs distributed throughout common areas. They can choose from cod, fresh shellfish and other seafood, various vermuts, pickles and olives, paella, churros, Spanish wines, international beers, delicious Iberian ham and cured sausages and cheeses, ice cream and non-Spanish items, such as pasta or sushi. Unsurprisingly, the concept has been a hit, and other similarly styled markets have since popped up around the city.

When we think of white wine in Catalonia, we think of its seemingly endless possibilities. Production of whites here has a 2,000-year-old history. The wide-ranging diversity in the area’s Mediterranean climate and calcareous soils, from the mountains to the sea, and the combination of old grape varieties and newly introduced “foreigners” with traditional and experimental methods of production make for innumerable styles and no taboos. Who knew white was a color with so many variations? The traditional Catalan grape varieties used to make white wine are mainly macabeo, xarel-lo, parellada and garnatxa blanca, but this area of Spain has the largest number of white grapes included in all its protected appellations (D.O.). Where other Spanish D.O.s usually are deeply defined by one or a few varieties, in the Catalunya D.O. there are more than 16 allowed – 35 counting the reds. In fact, this umbrella appellation, which covers wines that do not fall under the 10 subregion designations (Montsant, Penedès, etc.), was created to allow the use of all the grapes of the other Catalan designations in the entire area. It implicitly gives freedom to Catalan winemakers to express more than the old narrower conceptions of terroir and opens the doors to experimentation.

Mushroom hunting has an irresistible, magical pull. Composer John Cage, an avid mushroom collector, found them an integral part of his creative process, once writing: “Much can be learned about music by devoting oneself to the mushroom.” Every fall, thousands of Catalans likewise find themselves under the mushroom’s spell, following the elusive fungus’s silent melody into the woods, a rustic wicker basket in one hand and – more and more these days – a GPS-enabled smartphone in the other.

Dear Culinary Backstreets, I’ve noticed that a dish called “moustalevria” pops up in shops all over Athens in the autumn months. What is it, and where can I get it?

Dimitris Kotsaris was more proselytizer than baker. Rather than a flour-dusted apron, this mild-mannered gentleman would wear elegant suits to meet with journalists, bearing two or three kilos of his famous whole-wheat bread as a gift. He was an ardent believer in the medicinal qualities of bread and preached widely that good bread promoted good health, once even taking his case to Harvard, where he delivered a talk about the role of well-made loaves in healthy diets. In 1981 Kotsaris opened Pnyka, the pulpit from which he spread his yeasty gospel, and gave the bakery the Greek name for the hill downtown where, in the golden years of Ancient Greece, Athenians gathered for the general assemblies that played such a formative part in the creation of democracy. It is quite fitting then that the first Pnyka shop opened in Syntagma (“Constitution”) Square. The bakery has since added two more shops in the city, in Exarchia and in Pagrati, the headquarters of the operation, and its following is such that last year a third was established in Vienna. Kotsaris passed away last year but his vision lives on through his son George, who has taken over the business.

In Spain, conservas, or foods preserved in cans and jars, are not simply a matter of economic survival or a source of basic nutrition for students, hikers, military recruits and the like. Rather, the tradition of conservas more resembles that of keeping one’s most beautiful jewelry locked safe in a strongbox, to be brought out only on special occasions like Christmas, birthdays or the victory of a favorite football team. There’s nothing better than some delicate canned cockles to lavish on your parents-in-law before a holiday meal!

Editor’s note: This is the fourth installment in our street food series this week, featuring dispatches on the best streetside eating in all the cities Culinary Backstreets covers. Before we get down to the business of discussing the best of Athens’ street food, a disclaimer: Athens is at a disadvantage when it comes to streetside eats. For one thing, a lot of venues – souvlaki joints, pizza parlors and even offal soup places – are open all night or even 24/7; they are just not serving on the street, though.

Forget about Christmas. In Greece, Easter is the main event, one where food, naturally, plays a starring role. It is also very much a holiday celebrated in the countryside: most Athenians go back to their villages during the holiday to be with their extended family and enjoy the Easter-related culinary delights of their home region.

Dear Culinary Backstreets, I’m traveling to Barcelona and I love visiting food markets. I’ve heard a lot about La Boquería, but are there any other markets that might be worth visiting?

Mushroom hunting has an irresistible, magical pull. Composer John Cage, an avid mushroom collector, found them an integral part of his creative process, once writing: “Much can be learned about music by devoting oneself to the mushroom.” Every fall, thousands of Catalans likewise find themselves under the mushroom’s spell, following the elusive fungus’s silent melody into the woods, a rustic wicker basket in one hand and – more and more these days – a GPS-enabled smartphone in the other.

Diners in Istanbul are spoiled with options for fresh seafood. But most venues are mere caricatures of places like İsmet Baba, where traditions have been kept sacred for more than 50 years. While many other such restaurants are kitschy, İsmet is gritty and authentic. Located in Kuzguncuk, a charming neighborhood on the Asian side of the Bosphorus, it may not be the best restaurant in the city, but it’s got something most of the others have lost: old-school Istanbul charm and character.

Peynir means cheese in Turkish and peinirli (derived from the Turkish word peynirli, meaning “with cheese”) is a delicacy adored by pretty much everyone in Greece that strongly resembles the Turkish pide. It is a boat-shaped bread that is high in yeast and butter, with a buttery, cheesy filling.