On the "fudge guy" who was using the recipe from the marshmallow container, or the Toll House cookies winning 2 of the top spots: there's a lot more to good results than just the recipe. Equipment, skill, the idiosyncratic ways you don't follow the recipe or fill in where it's underspecified... Don't necessarily give in to the temptation to ascribe the phenomenon merely to irrationality or sentiment. Plus, it must be…
Indeed, my mother (unsurprisingly) uses exactly the same recipe as my grandmother did for chocolate chip cookies (I suspect it also came from the side of a chocolate chip bag). The cookies turned out very differently, however, depending on who made them.
(My aunt is not known for her cooking.)