So I just leaned about the "5th taste" called umami. The video said it comes naturally in some food but can also be in form of monosodium glutamate as food additive. I'm not a chef, but I'm eager to try adding that taste to different foods. What do I need? Just glutamate? http://www.ebay.com/sch/i.html?_trksid=m570.l3201&_nkw=glutamate&_sacat=0 Many thanks!