Beginning today, the Carl's Jr. chain of fast-food burger joints offers their newest creation, the "Portobello Mushroom Six Dollar Burger".

The take the same half-pound patty, with swiss cheese, red onions, tomato and lettue, but top it with a saucy concoction of sliced portobello mushrooms, and sauteed garlic and parsley.

The Portobello Mushroom Six Dollar Burger will sell for $4.79 at participating restaurants.

Source: Press Release