Umami Burger has launched the Slash burger at all 20 of its locations across the country. It contains shiitake mushrooms, caramelized onions, American cheese, avocado spread and wasabi aioli, served with a Parmesan cheese crisp. The Slash Burger costs $15, with one dollar going to the Los Angeles Youth Network. It is available now until November 27th.

In other news, Slash will be in Sioux Falls Saturday (September 27) in conjunction with the Brennan Rock & Roll Academy.