Haha, apparently the first stew that I made was really bad. What do I do with it? I want to make another stew now...does it just go away? If anyone has had this happen, please let me know, lol. I think it's hilarious...How on earth does the game know that I can't cook?

It will go away after about 15 minutes, but if you want to speed it up, you can either exit the game and launch it again or switch to a different tribe and back again.

is there a list of all possible stew combinations and what they do?

There are many 'recipe books' in the Guide section for VV:TLC at the bottom of the main forum page.

The recipe books are VERY helpful. Check more than one though. Sometimes there are goofs and missed things in them and they are not always the same from book to book.