Sweetbread
One of those many proteins that Marilyn Monroe was so deeply passionate about having in her diet was sweetbread. This is the culinary term for meat that often comes from either the thymus or the pancreas of a lamb or a calf.

While it might not be the most obvious source of protein on her weight-loss plan, Monroe was just as likely to eat this for dinner as she would eat anything else. Personally, we would prefer a steak or some lamb chops.
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