"Rather than beef, these food items are actually made with a substance known as 'taco meat filling,' " the lawsuit says. The firm contends that that Taco Bell shouldn't market the taco meat filling in question as beef because their testing shows that it only contains 36 percent ground beef. If that's true, Taco Bell's meat filling product would fall below the already generous USDA standard for it to qualify as meat -- the present standard demands it consist of at least 40 percent meat. This inspired Gizmodo's Jesus Diaz to crack, "Perhaps they should call it 'Almost Taco Meat Filling.'"
The remainder of the Taco Bell's meat filling product consists of "extenders" like water, "Isolated Oat Product," wheat oats, maltodrextrin, soy lecithin, maltodrextrin, anti-dusting agent, autolyzed yeast extract, modified corn starch, sodium phosphate and silicon dioxide.
Taco Bell actually addresses its use if silicon dioxide in the "Food Facts" section of its website under the question, "I heard a rumor that there's sand in your taco meat?" It then goes on to explain that silicone dioxide is "a safe, common food ingredient" that's "primarily used in food to prevent ingredients from sticking together."