Last month, the U.S. Food and Drug Administration (FDA) recalled almost 80,000 pounds of Costco's popular store-brand butter due to a crucial labeling error. While the butter listed "cream" as an ingredient, the packaging lacked a critical allergen warning alerting consumers that butter contains milk.

Due to a very basic error that could put consumers' health at risk, the major supermarket chain had to recall a large quantity of butter.