Chicken stock is mentioned in instructions but not listed with amount in ingredients

Hi! The recipe has been edited to reflect the correct amount of broth—thanks for this note!

When a recipe at food52 lacks an ingredient or an instruction and comes from a book or a blog, I look up the recipe and usually find the missing element.
For your use, here's the same recipe from another site. https://www.cookinglight.com/recipes/chinese-american-thanksgiving-meatballs