turtlezrock00,

making stew does not add to your food supply.

the question you are trying to ask is "what is stew useful for?"

the answer can be found in this guide to stew recipes post but beware it is a spoiler:
http://www.ldwforums.com/ubbthreads/ubbthreads.php?ubb=showflat&Number=53375&page=1#Post53375