We spotted this jubilant fellow on our Old City walk in Istanbul trying to sell his mobile shop/bicycle. Any buyers?

The backstreets of Istanbul's Osmanbey quarter are loaded with fabric shops, while the adjacent thoroughfare of Halaskargazi Avenue is a busy shopping area lined with chain clothing stores and hotels. Come here for a cheap shiny suit, but don’t expect to find rewarding culinary adventures, as most of the area's restaurants offer fast food that manages to be both overpriced and underwhelming. Given all that, we were thrilled when Mahir Lokantası rolled onto the scene in 2015, bringing to the table a fine-tuned rotating menu featuring daily regional specialties from every corner of Turkey. “We make a variety of dishes from the Black Sea region, the Mediterranean and Aegean coasts and Eastern and Central Anatolia,” Mahir Nazlıcan, the restaurant's namesake and head chef, told us.

Perhaps nowhere else is it clearer that as many as one million Syrians have settled down in Istanbul than in the city’s historic Fatih district. The neighborhood is home to the city’s immigration headquarters (Fatih Emniyet), and the backstreets leading up to it are among the most transformed, since Syrians and other new arrivals end up spending hours there, often taking multiple trips to the office to get their paperwork in order. A stroll down the area’s Aksemsettin Caddesi reveals a dwindling number of Turkish markets and a rising number of Syrian ones.

Pide is an oven-baked, boat-shaped favorite laden with cheese and often a variety of meats and vegetables, and we sample some of Istanbul's best on our Bazaar walk.

When Leyla Kılıç Karakaynak opened up a tiny restaurant on Kallavi Street in Istanbul's Beyoğlu district in 1996, she couldn't have predicted that she would end up practically running the whole street. That small restaurant, Fıccın, is now spread across six buildings on the same block-long pedestrian-only street and has become an Istanbul institution. The restaurant shares its name with its signature dish, a meat-filled savory pastry that is among the Circassian specialties on the menu. Karakaynak's family hails from North Ossetia, and while Fıccın serves up a number of classic Turkish staples, it's the regional dishes that you can't miss, including Çerkez tavuğu, a simple yet sumptous paste of shredded chicken and walnuts, and Çerkes mantısı, comforting, pillowy dumplings served under yogurt.

The esnaf lokantası is Turkey's gift to the working man and woman. While in many parts of the world, lunch during the work week means eating an uninspiring sandwich or salad inside a lonely cubicle at the office, workers in Turkey have the esnaf lokantası ("tradesman's restaurant" in Turkish). Outfitted with a steam table that usually holds dozens of ready-made and utterly homey dishes, it is much more than simply a canteen. In reality, it is the place that keeps a hungry nation going. We've rounded up six of our favorite esnaf lokantaları in Istanbul.

This chicken and rice cart in Istanbul's Unkapanı quarter serves the city's best, and there are many imitators that try to capitalize off of its good name. Fortunately, our Old City walk stops by for a taste of this simple yet delicious snack.

Mamouniyeh is a lovely semolina pudding that is a speciality in Syrian kitchens, and it can be enjoyed right here in Istanbul on our Kebab Krawl walk.

Istanbul's Kurtuluş neighborhood is home to a number of slow-burners, establishments that may be hidden in plain view due to their plainness but that end up becoming some of our favorites. Gimmicks don’t fly in down-to-earth Kurtuluş, where neighborly ties are strong and home-cooked meals are preferred. Tucked on a side street in the middle of the quarter is a small eatery that exemplifies this tried-and-true character. Behind windows that fog up quickly in the winter sit a handful of tables facing an open kitchen in what might be Istanbul's coziest restaurant, Ben-u Sen, which showcases the divine ev yemekleri (home cooking) of the delightful Nuray Güzel.

Convincing someone to accompany you to Istanbul’s Pendik district is no small feat. The Asian-side suburb is located in the far eastern reaches of the city, a trip of at least an hour and a half from the city center requiring no less than three metros and a cab. We've been met with moans and groans upon mentioning the name, as the district is synonymous to many with the wildfire-like urban sprawl that has engulfed Istanbul over the years. Those up for the journey, however, are rewarded handsomely at Lipa, a meyhane serving Bosnian specialties. The neighborhood of Sapan Bağları is home to a large population of natives from Sandzak, a predominantly Bosnian Muslim region now split across modern-day Serbia and Montenegro.

The fatty torik – the Turkish name for a large, mature Atlantic bonito, similar to the little tunny – courses the straits of the Bosphorus and the Dardanelles for just a short period each year in November and December. Yet the people of Istanbul eat it year-round by preserving the fish in a light brine, something it seems they have been doing for millennia – the Byzantines even minted coins with an image of the fish. Making lakerda is more than a means to preserve bonito for the rest of the year, however; it’s part of the city’s culinary instinct. Around 5 a.m. one recent morning in Yenikapı, yellow rubber boots were piled high in front of the one serene spot on the sprawling grounds of the Municipal Fish Auction.

(Editor's Note: In honor of the immigrants and refugees who have made their new home a better place for us all, this week we are running some of our favorite archived stories about those who have left a culinary mark on their adopted land.) On a recent sunny afternoon at the tiny Al Ahdab market, a wedge of light slashed through the front windows illuminating posters for condensed milk in Arabic script and one of an energy drink called Hell. The shop is easy to miss, tucked under the slope of Sarı Musa Sokak, which dips quickly from Millet Caddesi – the arterial avenue home to Istanbul’s Little Syria. By the front door was a rack of Cow Brand ghee, in large tin cans stacked like motor oil at a gas station.

We frequently venture to Istanbul's Aksaray district, where a small cluster of Georgian restaurants lie in close proximity to a bus station bringing people to and from the Caucasus. Giorgi serves up decadent, buttery khacaphuri and other Georgian classics, temporarily transporting one to Tbilisi.

Visitors to Istanbul's iconic Spice Bazaar encounter a place packed wall-to-wall with overzealous shopkeepers selling everything from saffron to sumac assembled in rows of majestic pyramids at slightly inflated prices. But for our money, the only spices worth a damn are found just outside in a humbler setting. Crammed behind a tiny kiosk perched in front of a fast-food restaurant that flanks one of the bazaar's entrances is the endearing Orhan usta. The loveable 65-year-old is a veritable master of çig köfte and a connoisseur of the spicy red pepper flakes cultivated in his hometown of Gaziantep, the southeastern city considered by many to be Turkey's culinary capital.

We usually steer clear of the touristy Old City district of Kumkapı, where you are more likely to be accosted by an aggressive maitre d’ trying to corral you into his overpriced fish restaurant than to find something simple, tasty and reasonably priced to eat. Sadly, in order to beat the competition next door, most of Kumkapı’s famed fish restaurants seem to have invested more in aggressive customer corralling tactics than in kitchen talent. However, tucked into the neighborhood’s backstreets, we’ve found a few hidden dining gems that locals in the know frequent. When in the area, we skip Kumkapı’s fish restaurant strip and make a beeline for Doyuran Lokantası, a serious little eating sanctuary on a nearby side street.