McNuggets are 45% meat (specifically: Chicken Breast Meat) -- at least they are in the UK, where they have to give out this information. Presumably the US recipe is at least similar.
I'm sure there are many traditional Italian meatball recipes, but as one example, I had an AI convert the US measurements from Chef John's recipe, and it estimated 900g meat and 494g other ingredients, so 65% meat.
https://www.mcdonalds.com/gb/en-gb/product/chicken-mcnuggets...
I'm sure there are many traditional Italian meatball recipes, but as one example, I had an AI convert the US measurements from Chef John's recipe, and it estimated 900g meat and 494g other ingredients, so 65% meat.
https://www.allrecipes.com/recipe/220854/chef-johns-italian-...
Of course the ingredients differ in a lot of other ways than just the percentage of meat. That's just what I looked at.