This is steamed egg. It is made by beating the egg and (sometimes) adding in water. As a result, this style of egg is similar to tofu in which it is very soft and fluffy. If you poke at it with a chopstick it goes through easily and it is easy to rip a piece of it out. There are many air holes, as you can see in the picture, the lumps and tiny black spots. The reason why it looks wrinkly is because as you steam it, the egg grows. When you take it out of the pot, it will quickly shrink as the hot air escapes. The edge of the egg is irregular is the same reason.