1) A powder substance that is mixed with water. When said substance is mixed with water, a tasty, salty new substance is formed. You can dip solid foods into the new substance to enhance the flavor of the solid food. Suggested solid foods: ham sandwich
, dead babies
2) An exclamation of frustration towards a Jewish person.
1) Oh man, my dead baby tastes much better when I dip it in this au jus!
2) Au jus! Why are you such a better accountant than me?