I do the same with meatloaf and stuffed cabbage. The difference from my experience is
the sticking the finger in the soup/sauce, etc...tasting for spices, adding the necessary spices, then re-sticking your finger in the soup/sauce. Same technique with re-using a spoon. As for Paula, I think she is a position to set an example....I don't know if she double dipped her finger, but it did not look professional~
just my thoughts,
Regards,
Barb