Derived from central Europe, the popular kichlach (Yiddish for "cookies") are to be found in many of the packages prepared by parents for their children serving in the Israeli military.
An omer is a measure of grain, in this case, barley. In the days of Temple worship, we were to bring the first sheaf of barley to the Temple, followed by other items, as a sacrifice (Leviticus 9–14).
Rabbi Shimon fled to the cave to escape a death sentence for publicly criticizing Roman culture. According to folk tradition, during his twelve years of isolation, he engaged in mystical meditation and wrote the Zohar, the central work of Kabbalah.