Answer:
A customer can use the theory of breach of the implied warranty of merchantability to recover damages suffered as a result of consuming food at a restaurant. This warranty implies that the food is reasonably fit for consumption and is of a quality that would be expected from a merchant selling such products. If the food is found to be unsafe or unfit for consumption, and the customer can prove that he or she was harmed as a result, then the customer may be able to recover damages from the restaurant under this theory.