Once upon a time, there was a man named Dippel who lived in Germany many years ago. He was known for making a special kind of oil that people called "Dippel's oil." Do you know what oil is? It's a slimy liquid that can be used for many things like cooking, lubricating machines, or even making soap.
Dippel's oil was special because it was made from animal bones and was used for medicinal purposes. When people got sick, they would sometimes rub this oil on their bodies to help them feel better.
But making this oil wasn't easy. It required a lot of steps, and Dippel had to be very careful to make sure it was safe to use. First, he would take animal bones and burn them until they turned into ash. Then, he would mix the ash with some other chemicals and heat it up again to create a strange liquid that was Dippel's oil.
People used this oil for many years, but eventually, they found other medicines that worked better and were less stinky. Today, we don't use Dippel's oil anymore, but we can still learn from his creativity and hard work in making something special and unique.