Some foods supplied by Walkers Shortbread, Inc. ("Walkers Shortbread") can contain chemicals listed under Proposition 65. For example, some listed chemicals such as acrylamide can be created naturally in certain types of foods as a general matter during ordinary cooking methods such as baking. Under Proposition 65, the mere presence of a chemical in a product does not trigger the requirement to warn. Instead, the law sets exposure-based thresholds for warnings. Exposures that do not exceed those warning thresholds do not require warnings. Walkers Shortbread maintains that Proposition 65 warnings are not required for any of its products. For chemicals, such as acrylamide, which is formed as a natural byproduct of normal cooking processes, there is a provision under Proposition 65 that provides for a less stringent exposure threshold for chemicals formed as a byproduct of cooking where cooking is necessary to render food palatable or to prevent microbiological contamination (the "Cooking Provision"). Walkers Shortbread maintains that the Cooking Provision applies to any exposures from its products to acrylamide and that any exposures to acrylamide do not require warnings.