This is the 434th most frequent Norwegian word.
tyrkiske
"Turkish" (adjective, relating to Turkey or its people, language, or culture).
In this sentence, 'tyrkiske' is an adjective describing the noun 'retter', indicating that the dishes are specific to Turkish cuisine.
Jeg liker tyrkiske retter.
I like Turkish dishes.
In this case, 'tyrkiske' describes 'venner', emphasizing the nationality or cultural background of the friends.
De forteller om sine tyrkiske venner.
They talk about their Turkish friends.
Here, 'tyrkiske' is an adjective modifying the noun 'markeder', specifying that these markets are of Turkish origin or style.