I'm almost positive that this is DNA. LMK if I'm correct.
Tom is most likely making a Remouillage. It is French for "re-wetting." It is stock that was made from bones that were already used in a previous stock. It is also known as "Second stock." The bones would be re-simmered and fresh mirepoix added. The result of a Remouillage will not be as clear as the original stock and is a bit weaker.
i think the awnser is nutrition facts i really hope this helps ;)
You can try out veggies and come up with a hashtag for it
I have no clue fam i think you should study and you will do really good