Umami. Known as the fifth basic taste, some people liken it to the difference between the flavor of an almost ripe tomato and a perfectly ripe tomato. Also found in sea salt, cured meats, cheese and mushrooms, it imparts a savory heartiness that deepens flavor. This is a mixture of several different known umami ingredients. I've toyed with a recipe that was posted as "umami salt" by the breakaway cook, changing some of the ingredients and adjusting the method. Use in soups, salad dressing, sprinkled into casseroles, or wherever you want a richer flavor. A little goes a long way, so start with a small amount and increase to the level that suits you.