If you are vegetarian due to moral concerns you may consider whitelisting jamon iberico de bellota. They live much better than we do.

The production of jamon iberico de bellota is strictly regulated, among other things each pig has to have at least 12500 m^2 of their natural habitat (dehesa) to roam freely and eat from the oak trees. That's what gives the meat the intense taste and infiltrated fat, the pigs grow freely roaming vast areas of their natural habitat and eat what they love most.