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"The Portobello Mushroom Six Dollar Burger was the most popular limited-time addition to the Six Dollar Burger line at Carl's Jr. when it was introduced two years ago," says Brad Haley, executive vice president of marketing for Carl's Jr. restaurants. "It was, and still is, the only fast-food burger topped with premium-quality Portobello mushrooms. So, when we heard over and over from our guests that they wanted the Portobello Mushroom Six Dollar Burger back at Carl's Jr., we listened."
During its initial appearance on the Carl's Jr. menu, The Portobello Mushroom Six Dollar Burger won the product award for excellence from Produce Business Magazine, and was among a handful of menu items profiled by USA Today for a trend story on fast-food going gourmet.
"Our original Six Dollar Burger was so named because it had the quality and taste of burgers that could only be found at sit-down restaurants, which cost six dollars or more, but it sold for about four dollars," adds Haley. "The initial success of that single burger led to the line of six, Six Dollar Burgers we have today, plus several limited-time additions like the unique Portobello Six Dollar Burger." The addition to the popular Six Dollar Burger line features high-quality Portobello mushrooms sliced and sauteed with garlic and parsley. The five-star mushroom sauce tops a charbroiled, 100 percent Angus beef patty complemented by melted Swiss cheese, sliced red onions, juicy tomato, and crisp lettuce on a seeded bun. The Portobello Mushroom Six Dollar Burger will sell for $4.89 at participating restaurants--or $6.89 as part of a combo meal. In addition, customers can add Portobello mushroom sauce to any burger for 99 cents.