A group of California attorneys say Taco Bell uses false advertisement by referring to "seasoned beef" in its food when in fact the fast food chain doesn't use real meat.

A lawsuit, filed in California Jan. 21 by the Alabama-based law firm Beasley, claims the lawyers had Taco Bell's meat tested, and the mixture contained less than 35 percent beef.

"Rather than beef, these food items are actually made with a substance known as 'taco meat filling' which mostly consists of 'extenders' and other non-meat substances," attorneys said in the suit. "Taco meat filling is not beef."

They added that a crunchy beef taco, for example, contains water, wheat oats, soy lecithin, modified corn starch, maltodrextrin and an anti-dusting agent.

Taco Bell responded saying the company doesn't mislead customers.

"Taco Bell prides itself on serving high quality Mexican inspired food with great value. We're happy that the millions of customers we serve every week agree," said Rob Poetsch, a spokesman for the Irvine, Calif.-based Taco Bell.

He said the company would "vigorously defend the suit."

The lawyers behind the claim are not seeking damages. They just hope the lawsuit will keeps fast food chains honest.