Turkish coffee (kahve), served in tiny cups, is strong and tasty, just be careful not to drink the slugdy grounds at the bottom of the cup. It is much different than the so called Turkish coffees sold abroad. Sade kahve is served black, while as şekerli, orta şekerli and çok şekerli will get you a little, some or a lot of sugar in your cup.
Instant coffees, cappuccinos, and espressos are gaining more popularity day by day, and can be found with many different flavours.
Despite coffee takes a substantial part in national culture, tea (çay) is also very popular and is indeed the drink of choice, and most Turks are heavy drinkers of tea in daily lives. Having entered the scene just in 1930s, tea quickly gained ground against coffee due to the fact that Yemen, the traditional supplier of coffee in Turkey then, was cut off from the rest of Ottoman Empire in early 20th century, and the first tea plants took root in Eastern Karadeniz after some unsuccessful trials to grow it in the country, as a result of protectionist economic politics that were put into effect after WWI. Be careful, if your tea is prepared by locals, it can be much stronger than you’re used to. Although it is not native-typical and a rather touristic feature, you have to taste the special apple tea (elma çayı) or sage tea (adaçayı, literally island tea) of Turkey!