During the week the goal is to remove any impurity from the food we eat. Minhag to taste Shabbos food on erev (before) Shabbos. Story of man wanting to get divorced over kugel. By smelling the flesh of korbonos (sacrifices in the Holy Temple), a woman never miscarried. It is more chashuv (important) to have guests on a Holiday then on Shabbos.