Food and festivals are intertwined together. The Rosh Hashana is no exception to this. The rituals used as a part of this 'feast of trumpets', or the feast of shofar, is a festive feast. According to the Talmud, the Jewish scripture, symbolic acts are performed as a good omen, and also as an expression of prayer that the New Year brings good for all.
Honey is also a main ingredient in many holiday recipes.
Other customs include eating the head of a fish, pomegranates and carrots. If one is idle, it is as if he slept. Finally please keep anger at bay on Rosh Hashana. Always remember that G-d judges us in the same manner as we judge other people. If we get angry easily, so will be He.