Why do we eat a round challah on Rosh HaShanah?
There are many explanations for this custom. Some see the round shape as a reflection of the continuing cycle of years and seasons. Another interpretation is that the round challah resembles a crown, symbolizing the sovereignty of God. At a time of year when our thoughts turn to repentance and resolutions of self-improvement, the round challah reminds us that the opportunity for teshuvah, return, is never-ending.