Smen is a type of delicious food that some people in certain parts of the world like to eat. It's made from a type of dairy called butter, which comes from cows.
When you make smen, you take the butter and you cook it for a very long time. This makes the butter turn into a kind of liquid that's very oily and has a strong smell.
People who like to eat smen say that it adds a lot of flavor to their food. They might add it to dishes like soups or stews, or use it to cook with instead of regular butter.
Overall, smen is a kind of food that some people really enjoy, but it might not be something that everyone likes because of its strong smell and taste.