Join Chabad of Contra Costa, Chabad of the East Bay, Contra Costa Jewish Day School, Contra Costa Jewish Community Center and Diablo Valley Hadassa.y. For the 4th Annual Mega Challah Bake! For Women and Girls ages 12 and up. This will be an event you will not want to miss! RSVP today via the link to reserve your spot! Featuring Ilene Keys Bobrowsky who will lead us in uplifting Shabbat songs.