under a tahini moon

I would like to know what is in sesame seeds that my body is apparently lacking. For two weeks, I have been craving sesame seeds something fierce. I put them in my home-made granola bars (where normally I stick to almonds, currants and coconut). I learned how to cook a spinach-sesame Japanese dish called gomae. I stealthily go down to the health food store mid-afternoon to get some of their sesame crisps.

Tryptophan? I don't know but yumm....sesame seeds. My new best friend.