Rainbow cookies are popular in the
American Jewish community, and are commonly associated with
American Jewish cuisine and can be found at many Jewish delis, kosher eateries, and
Jewish bakeries throughout the United States, especially in the
Northeastern United States. As
Jewish refugees from Eastern Europe settled in New York City
en masse at the turn of the twentieth century, they often settled in areas that also had an
Italian population. It was at this point that Jewish Americans were introduced to the rainbow cookie. They are a common
kiddush cookie served on
Shabbat morning and at
synagogues across the country. There are also versions of rainbow cookies made for
Passover, which are made with
matzo meal or
almond flour (due to the prohibition of leavening during this holiday). Jewish Americans adapted this cookie to suit their own
Kosher dietary needs, substituting
margarine for the
butter originally used (making them
pareve). Other color variations may include blue and white, instead of the traditional rainbow, to celebrate
Hanukkah. ==Other names==