Stuck on the Fabulously Filthy Aspiration

I don't use any mods or CC for my game. 

The workaround or solution that worked for me to complete the Cook 3 Meals on a Dirty or Filthy Floor Level are the following:

1. Make sure your sim doesn't have the "slob" trait before doing this aspiration.
2. I waited until the floor was "Filthy" and then I cooked meals that have spoiled ingredients.
3. I used the stand mixer to make "prepped seafood" 3 times, then waited until they spoiled in my sim's inventory.
4.  I used all three to make three different types of food using "prepped seafood" by clicking the "cook" option on the fridge.
5. My sim then placed the food on the kitchen counters or the table and even if they were marked "excellent," they were still made out of spoiled ingredients so I guess that's what makes it gross and it completed challenge for me.

Try it out! I hope it works.