There is Turkish coffee in Istanbul, but most people drink tea. All day. Go to a café, drink tea. Finish a meal, drink tea. Have a conversation, drink tea. Turks make tea in a samovar, as Russians do. Or, more often these days, they make it in a samovar-like double pot. Strong pot of tea, pot of hot water, mix the two. There is always sugar available. No milk or lemon. They drink tea here in glasses, not the straight ones in filigree metal holders of Russia, but much smaller tulip-shaped ones, often brought on a china saucer.
"Tea" in Turkish is çay, pronounced chai (the way your local coffee shop pronounces that word, not the way it is pronounced in Hebrew). Same word as in Russian and several languages of India. (That's right, chai just means "tea," so "chai tea" is incorrect. But --in the U.S. and in India-- chai or masala chai is indeed Indian-style spiced tea.)