Challah is a popular Jewish bread typically enjoyed on the Sabbath and holidays. The dough is enriched with eggs, oil, and sugar and it’s often braided. There are many different and beautiful ways to braid dough and one of the easiest shapes is the round four-strand braid, often served at Rosh Hashanah, the Jewish new year, to signify the cyclical nature of the year and seasons.

https://breadtopia.com/sourdough-challah/