Specific foods are associated with the feasts, but may differ nationally. This outstanding site describes the how, what, when, where, and why of the kosher laws. It includes a straightforward description of the kosher laws. The official internet site of the U.S. kosher food industry. Includes an extensive listing of products and manufacturers.
Dietary practices vary from none to explicit.
Devout Catholics observe several feast and fast days during the year. Feast days include Christmas, Theophany, Presentation of the Lord into the Temple, Annunciation, Easter, Ascension, Pentecost Sunday, the Transfiguration, Dormition of the Holy Theotokos, Nativity of the Holy Theotokos, and Presentation of the Holy Theotokos. Food and drink is avoided before communion. Some devout followers may avoid olive oil on fast days, too. Fast periods include Advent, Lent, the Fast of the Apostles, and Fast of the Dormition of the Holy Theotokos.