It's possible that neither is in meat loaf. It can be made with
any ground meat (or soy blend, if you're a vegetarian). Using pork
and/or veal will change the flavor but they aren't necessary.
View page
1 pound (lb.) raw ground meat is contains 10% fat
View page
meat, meet
bury, berry
View page
Most recipes for these call for 1/4 to 1/3 cup of ground
meat.