Decision to cut topping comes as officials work to confirm source of bacteria linked to McDonald's Quarter Pounders.

The produce company that supplied onions to McDonald’s recently removed products from the market because of potential E. coli contamination.

After the alert was sent, Taco Bell, KFC, and Pizza Hut (three fast food chains under the Yum! Brands umbrella), as well as Burger King, began pulling onions from menus in some locations, though it's unclear at this time if this is directly related to the Taylor Farms recall.