Save the addition of salt, spices and other add-ins for taste, butter is a single-ingredient food. So, it may come as a surprise that on October 11, the FDA recalled 80,000 pounds of Costco brand butter for containing its only ingredient: milk.

Costco recalled nearly 80,000 pounds of store-brand butter last month because the product's label was missing a key ingredient: milk.

The retailing chain has recalled 80,000 pounds of butter because its packaging omitted an allergen warning. It follows a more dramatic packaging stumble from Mattel last week.