Skyr is a very special type of food that comes from Iceland. It looks like yogurt, but it's actually a type of cheese.
To make skyr, you start with milk and add some little things called "cultures." These cultures are tiny living things that eat the sugar in the milk and change it into something different. This process is called fermentation.
After a while, the milk turns into something thicker, tangier, and even creamier than yogurt. It becomes skyr! But there's still more to do. Skyr is strained, which means we take out a lot of the liquid to make it even thicker.
Some people like to eat skyr all by itself, but others mix in some fruit or honey to make it sweeter. Skyr is a very healthy food because it has a lot of protein and not too much sugar - so it makes a good snack if you're hungry!
So, to sum up: skyr is like yogurt, but thicker and tangier. It's made by fermentation and straining milk, and it's very good for you!