This umami-rich burger is unabashedly attempting to imitate a beef burger in flavor, texture, and appearance. Mushrooms and grains form the bulk of the burger--the mushrooms are tender, and the grains stay firm to give the impression of protein which has been cooked. The fat helps coat the separate elements so that it holds together nicely and isn't piecey like most veggie burgers. The patty absorbs lots of grill flavor to deliver a charred, smokey patty just like a traditional beefy backyard burger.