From winter to summer. Khushuur is usually eaten during the summer Nadaam festival and consists of a fried pastry filled with meat. When eating hot it is favorable to pass the khushuur from one palm of your hand to the other and even to hold the hot khushuur against each ear for health benefits.
A large amount of preparation is needed for this meal. Firstly, you should have a ger with stove ready. Secondly a live sheep. Thirdly a strong Mongolian capable of preparing the sheep. Fourth, the meat and innards should be placed into a very large bowl along with whole vegetables, smooth rocks and water. Fifth, leave to boil for two hours. When ready you will be given hot rocks to juggle between your hands (this is supposed to have health benefits before chomping down on possibly the freshest meat you will have ever eaten.
There are many variations in Mongolia. Essentially fermented milk; some types are mixed with flour and sugar for a more desert like treat. Expect to find them in all shapes and sizes. Great for a quick energy booster as well as something to suck on during a long journey.