What is "coulibiac"?

Coulibiac is a traditional Russian dish made from a pastry crust filled with a variety of ingredients, such as fish, eggs, mushrooms, and rice. It is usually served as a main dish and is popular in Russia and is enjoyed all over the world. The dish typically consists of a pastry crust filled with a variety of ingredients, such as fish, eggs, mushrooms, and rice. It is usually served with a variety of accompaniments, such as pickles, chutney, or yogurt. Additionally, it can be served with a variety of sauces, such as mayonnaise or a cream sauce.