beyoğlu
Pano Şarap Evi on Hamalbaşı, an 1898 Greek-Turkish wine house with a doorway-deep cellar and a Bozcaada bottle list nobody else pours.
Why locals love it: Tiny 1898 wine cellar on a Hamalbaşı side-lane that the Istiklal crowd walks straight past.
Tip: Order the Bozcaada Çavuş with a cheese plate; the room only holds about thirty.
beyoğlu
Hayvore off Istiklal, the Black Sea steam-table cooking corn-bread anchovies and smoky bean stews for whoever knows the side street.
Why locals love it: Locals fill it for the Black Sea menu, tourists walk past for the larger Istiklal places ten metres away.
Tip: Order the hamsi pilav and the muhlama; they only run while supplies last.
karaköy
Tarihi Karaköy Balıkçısı in Perşembe Pazarı, the 1923 fish counter inside an old hardware market, grilling sole and bonito on skewers for twelve seats.
Why locals love it: Hidden inside the Perşembe Pazarı hardware-market arcades, with only about a dozen seats inside the original Griffin Han.
Tip: Aim for 12:30 to grab a table; the kitchen closes when the morning catch sells out.
fatih
Bahar Restaurant inside a Yağcı Han courtyard, an esnaf lokanta feeding bazaar working merchants from steam-table stewpots that empty by mid-afternoon.
Why locals love it: Buried in a small han off the Grand Bazaar's Nuruosmaniye gate, found only by the bazaar merchants who eat there daily.
Tip: Get there before 14:00 or the stewpots are empty.
beyoğlu
Antiochia on a Beyoğlu side street, an Antakya (Hatay) kitchen plating southeastern grills and Levant mezze from a tight Asmalımescit address.
Why locals love it: Tucked on a tight General Yazgan side-street in Asmalımescit, often walked past on the way to bigger meyhanes.
Tip: Order the cevizli biber, the kunefe and the cag kebab together.
beyoğlu
Mandabatmaz in Olivya Geçidi, a one-table Beyoğlu Turkish coffee bar running since 1967, the cup of foam so dense the buffalo doesn't sink.
Why locals love it: Tucked inside the Olivya Passage off Istiklal, easy to miss for anyone not looking for the unmarked alley.
Tip: Order an orta-şekerli (medium-sweet) and stay for two; the kahveci will keep refilling water.