Commercial sterility is the standard of sterility required in canned and similarly packaged foods: not absolute sterility, but the absence of microorganisms capable of growing under normal storage conditions and causing spoilage or illness. The 12D botulinum cook for low-acid canned foods is designed to achieve it, destroying pathogens and spoilage organisms while accepting that some harmless heat-resistant spores may survive dormant. It is a pragmatic, risk-based standard: the food is safe and stable on the shelf, even though a microbiologist could theoretically find survivors. Every safe can on a supermarket shelf meets this standard.