You shouldn’t have to check the label to know whether a stick of real butter contains milk. However, Costco is recalling 80,000 pounds of it for that very reason. The FDA made the call in October to

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 voluntarily recalled 79,200 pounds of two types of its store-brand butter over the past month because their labels may not have said the products contain milk.