I think I saw in Polish forum secion topic about what they remove vs what you can find in internet after few month earlier leak, they find there a list of items like bad omlet, good omlet etc etc (don't know if it was first time anybody discuss about that on this forum)
There are 4 different foods you can make;
"Rather Unappetizing meal": Bunch of stuff without eggs.
"Scrambled Eggs": Eggs
"Omelet for Yennefer": Eggs, Onions, Peppers and Mushrooms
"Omelet à la Geralt of Rivia": Unsure about this one, but looking in the files it seems it needs; Eggs, Onions, Peppers, Mushrooms, and 16+ random edibles.