Although there have been claims that Easter eggs came from the pagan symbols, there is no solid evidence for this. At the Passover, a hard-boiled egg dipped in salt water is a symbol of both new life and the Passover sacrifice offered at the Temple in Jerusalem. In Christian times, the egg was a symbol of new life just as a chick might hatch from the egg. The Easter egg tradition may have celebrated the end of the privations of Lent. In the Medieval Europe, people were not allowed to eat eggs on fast days. It was traditional to use up all of the eggs that they had before Lent began, and this also made the tradition of Pancake Day. Eggs were viewed as symbols of new life and fertility through the ages. It is believed that for this reason many ancient cultures, including the Ancient Egyptians, Persians, and Romans, used eggs during their spring festivals. In Eastern Christianity, both meat and dairy are still not allowed to be eaten during the fast, and eggs are seen as "dairy" too.