Can anyone explain Umami? It seems to be the new buzz word for foodies, but what exatcly is it supposed to be? I saw it defined as "savory", however after that I watched a food network show where the contestants were supposed to have umami in all the dishes they prepared. Either the food had umami, or it lacked umami, even though the dish was supposed to be sweet, sour, salty, etc. My cooking has delighted family and friends for decades with neither compliment nor complaint about this "umami"... is it real, or just more pretentious food snobbery?