Okay, imagine you went to a friend's house for lunch and they gave you a plate with a design on it. El-yahudiyeh ware is just like that- it's a type of pottery from a long time ago that has designs on it.
But, instead of being from your friend's house, it's from a place called Egypt and was made over 2,000 years ago. People who lived in Egypt made these pretty plates and bowls out of clay and decorated them with pictures of things like birds and flowers.
Today, people like to study these ancient pieces of pottery to learn more about what life was like a long time ago in Egypt. So, el-yahudiyeh ware is just a fancy name for the beautiful plates and bowls that people made a long time ago and are now important to study to learn about history.