California Dairies Powdered Milk (Salmonella Ingredient Contamination)

California Dairies recalled bulk powdered milk and buttermilk powder after the ingredients tested positive for potential Salmonella contamination. Because the powder was sold as a raw ingredient to other manufacturers, the contamination cascaded into a wide range of downstream consumer products, including sour cream & onion seasoning blends and sour cream & onion cheese curds sold under multiple brands with numerous lot numbers and best-by dates. The event illustrates how a single contaminated ingredient lot can trigger dozens of secondary recalls across the food supply chain before any of them reach consumers.