This horrifies me to no end, but my husband often takes the leftover gefilte fish, some herring, and horseradish, and blends it in the food processor to make a “shmear” that he then spreads across either challah or matzoh with some mayo. Very often, he’ll have a very strong cup of black coffee with it, and if we are not going out that evening, he’ll pour some whiskey into the coffee, as well.
My children are ashamed to have their friends visit on motzei Shabbos. Mu husband’s cheshbon is that the flavors taste well together, but that on Shabbos he cannot mash or blend them sufficiently.
Ugh.