To create Trader Joe’s Mushroom & Company Multipurpose Umami Seasoning Blend, we began with kosher salt, and used a flavor base of porcini and white button mushrooms – earthy mushroom flavor really is the cornerstone of umami. The ingredient list also includes onion, mustard seed, red & black pepper, and thyme. It’s a boon mixed into turkey burgers, stirred into scrambled eggs, or used to elevate the flavors of... everything, really, a sprinkle at a time.