The sound of bombs has become an all too frequent occurrence in Istanbul as of late, and residents of the city's Cihangir neighborhood were spooked as ever when an explosion occurred in a building overlooking the main square early on a recent Sunday morning. Blasts sound no less scary when they are the result of gas leaks. When the smoke cleared, 75-year-old Feridun Yükseltürk was found crushed under the fallen rubble, just steps from the spot where he sold simit from a cart daily for the past six years. The tragedy sent shockwaves through Cihangir, where Feridun was a beloved figure renowned for his unwavering generosity.

In Istanbul's iconic Haydarpaşa train terminal, the door of a crowded restaurant and bar opens to beams of sparkling light streaming across the Marmara Sea coast. Trains haven't departed Haydarpaşa for nearly three years while the station undergoes extensive renovations, but its restaurant, Mythos, is still open and popular as ever, a refuge for a faithful crowd of regulars, who come to drink at a train station even though they aren’t going anywhere. Built in the first decade of the 20th century by the Germans and gifted to Sultan Abdülhamid II, the station is a handsome and prominent icon of the city, an imposing presence on the city's Anatolian shoreline.

This delicious, pistachio dust-covered slice of Antep katmer is as decadent as it looks, and can be enjoyed on our Two Markets, Two Continents tour.

In Istanbul, there is a single neighborhood where one can find Uzbek mantı, imported Ethiopian spices and hair products, smuggled Armenian brandy, Syrian schwarma and sizzling kebap grilled up by an usta hailing from southeast Turkey’s Diyarbakır. Kumkapı – a shabby seaside strip of century-old homes, Greek and Armenian churches and residents from a vast array of countries that most Americans couldn't pick out on a map – is far and away the most diverse place in Istanbul. Nowhere else comes close. In perpetual motion, Kumkapı is home to a rotating cast of eclectic restaurants that cannot be found anywhere else in the city. Many of these open and close before we can squeeze in a second visit.

Editor's note: In the latest installment of our recurring feature, First Stop, we asked chef Somer Sivrioglu of the Sydney restaurant Efendy where he stops first for food when he returns to his hometown of Istanbul. Sivrioglu is the author of the cookbook Anatolia: Adventures in Turkish Cooking (Murdoch Books, April 2016). Any list is controversial and biased by its nature, and lists do not get any more biased than mine, as I am a Kadıköy fanatic and impossible to convince that there are better versions of food on the European side of Istanbul. I was born and raised in Kadıköy, and we lived first at Caferağa, five minutes to Kadıköy market, then in Moda, Kalamış and Fenerbahçe.

When you think about lettuce, if you think about it at all, it’s probably as the bland but virtuous base to a salad. But in days past in Turkey, this leafy green was just as often consumed as a snack in itself, as an essential part of a main dish or even as a sweet treat. “Marul [romaine] has been cooked as a vegetable since ancient Greek, Roman, and Byzantine times,” says food writer Aylın Öney Tan. “In many parts of Anatolia, it was a spring tradition to dip marul in pekmez (molasses) or honey, to eat it with something sweet that contrasted with the lettuce’s bitterness.” This wouldn’t really work with supermarket iceberg, of course – to fully enjoy lettuce’s culinary potential requires a fresh, high-quality crop.

Istanbul’s Aksaray district is a difficult place to get to know. It's probably the most diverse district in all of Turkey and with a very high turnover rate. Those Georgian ladies you saw dragging an overstuffed plaid duffel down Buyuk Langa Caddesi yesterday? They might be halfway to Batumi by now. The Syrian family by the bus stop? They may be on their way to meet a man in Izmir about a boat. Who knows? Aksaray’s unknowableness makes some locals uneasy; there's got to be mischief in all that motion, with all of those foreigners. Such is the stigma of Aksaray, den of thieves.

The triangle of Kurtuluş, Feriköy and Bomonti represents an Istanbul on the verge of fading away. Though still inhabited by significant numbers of Greeks, Jews and Armenians, there are more local churches and synagogues than are used by the remnants of those diminished communities. The numerous schools, houses of worship and cemeteries are relics testifying to the cosmopolitanism that once defined this segment of inner Istanbul. Another nostalgic quality of the area is its small-business culture, still thriving, yet on the verge of a major shift.

Istanbul's Samatya neighborhood is home to one of the city's many sprawling weekly markets, where one can find excellent Ezine, a white cheese from a district of the same name in Çanakkale, at modest prices.

They weren’t easy to spot at first: tiny green shoots with reddish roots, scarcely an inch high, poking out of the mud along the banks of a brackish stream near the Aegean town of Alaçatı. From these unpromising beginnings come a dish known to nearly every patron of a Turkish meyhane: nutrient-rich deniz börülcesi (samphire), typically served boiled and dressed with olive oil, lemon, and garlic. The simple word ot, which translates to “herb” or “weed,” doesn’t do justice to the important – and delicious – role these wild greens play in the cuisine of Turkey’s Aegean region. Though most commonly served as zeytinyağlılar, dishes “with olive oil” like the classic deniz börülcesi salad, their versatility was on full display at the recent Alaçatı Ot Festivali, an annual celebration of all things leafy and green.

Architectural and historical monuments of the Ottoman Era, the hans and caravansaray that freckle the old city, have mostly been left to their own devices. Originally built as imposing weigh stations for incoming traders, today they are crumbling in places and patched up with duct tape in others. These buildings are still living spaces of commerce and craftsmanship, or simply storage, a tradition which reaches back centuries. Wandering around one han which hosts a bustling trade in yarn, or visiting an Armenian silversmith in his tiny vaulted cell tapping detail into an elaborate dinner plate is a magical experience.

We could devote a weekly column to the culinary treasures of Istanbul’s polyglot Aksaray district and probably never have to worry about running out of things to say. The area is jam-packed with places to eat, and while we've written about many of them, Aksaray just keeps on delivering. Having previously covered the Syrian, Georgian, Azerbaijani and Uighur restaurants that make Aksaray a true patchwork of culinary destinations, our most vulnerable soft spot still lies in the strip of kebab restaurants inspired by the cuisine of southern Turkey’s Hatay and Urfa and located adjacent to the metro station.

After midnight deep in the heart of Beşiktas, these two gentlemen can be found slinging grilled sandwiches of thin, sliced sucuk, peppers and tomatoes. It's one of our favorite street snacks, and one of the perfect follow ups to a cold one or four.

In the Laz language, “si sore” means, “where are you?” At least twice a week for past few years, our answer to that question at lunchtime would be, “We are at Pera Sisore.” This little restaurant in the Asmalımescit area became one of our go-to lunch spots by serving some of the best Black Sea food around town. But after a disagreement, the two partners of the restaurant went their separate ways and the quality at Pera Sisore, sadly, took a turn for the worse. We were feeling a bit lost for a period, not knowing where to go for a quick, honest lunch of hearty Laz fare. The Black Sea area is Turkey’s culinary misfit – it's not really about kebabs or mezes. If anything, the food there seems to have been mysteriously transplanted from the American Deep South.

Tucked away in an alley in Istanbul’s Aksaray neighborhood, Şirket Alahdab is a small grocery store overflowing with Syrian staples: pickled baby eggplants, dried leafy greens, cans of clotted cream for desserts. When we enter the store, Istanbul temporarily fades away and Damascus or Aleppo take its place. “All real,” the clerk declares proudly, as he shows off his goods. “Smuggled from Syria.”