Cooking for Shabbat

Marshall Weiss discusses the availability of kosher food aboard the Titanic in this article at the Dayton Jewish Observer.

And speaking about food, the following is an excerpt from a daily halachah email I received authored by Rabbi Eli Mansour.

When Yom Tov falls on Friday, Halacha forbids cooking or making any preparations on that day for Shabbat, unless one follows the procedure known as "Eruv Tavshilin." The Eruv Tavshilin is made on Erev Yom Tov; thus, if Yom Tov falls on Friday and Shabbat, one would make the Eruv Tavshilin on Thursday, before the onset of Yom Tov. One takes a Ke'zayit (the volume of an olive) of bread – or, on Pesach, Matza – together with a cooked food – our practice is to use an egg – and sets them aside. He then makes the formal declaration stating that through this Eruv it will be permitted to cook, bake and make any preparations necessary on Yom Tov for Shabbat. Without making an Eruv Tavshilin, one may not prepare on Yom Tov for Shabbat.