I remember a talk from Rav Chaim Mintz Shlita at a leil shabbos seudah in Yeshiva Staten Island, where he mentioned that cholent is a “maychal shabbos” and should be reserved for shabbos.
So, presumably, when I eat my Shabbos leftovers on Sunday night, I’m desecrating the Shabbos by not reserving the Shabbos food for Shabbos.
The Wolf