In the episode "All Our Yesterdays" of *TOS*, Spock reveals he is a vegetarian. The other day I was reading that Leonard was a vegetarian in real life. But I also read a 1967 [magazine](http://www.leonardnimoy.de/index.php?option=com_content&view=article&id=1464) where he said his favorite food was steak. 

So was he really a vegetarian or did someone make a mistake?