Salmonella risks prompt recalls for chips, pizza and cheese breads sold at Walmart, Costco and other national chains. Here's what you should toss.

Some sad news for snack lovers: A salmonella outbreak is affecting many tasty treats.

The outbreak is linked to powdered milk and buttermilk supplied by California Dairies — an ingredient used to flavor some snacks, such as seasoning for potato chips and cheese breads made by a frozen pizza company and sold at Costco, Walmart and Target, among other retailers. According to the Food and Drug Administration , the dairy ingredients were voluntarily recalled on April 20 due to possible contamination.

More than a dozen products have already been affected, though additional recalls could still be announced. Walmart is among the companies to have issued a product recall, for its Blackstone Parmesan Ranch seasoning .

Here are the snack foods that have been recalled so far, according to the FDA website:

Angel Specialty Products, Royal Gold, Boba Time, Fanale, Denda — recalled May 22

Williams Sonoma Fireworks Popcorn, White Cheddar Seasoning — recalled May 8

Stoltzfus Family Dairy, Sour Cream and Onion Cheese Curds — recalled May 7

Wildlife Seasoning, Flavored Popcorn Seasoning — recalled May 7