What is an allergen?

An allergen is defined as a food substance that can cause an allergic reaction in some individuals. This means that certain people may have immune system responses to these substances, leading to various symptoms ranging from mild (like hives or itching) to severe (such as anaphylaxis). Recognizing allergens is critical in food service, especially in environments like Chipotle, where customers may have food allergies that require careful attention to prevent cross-contamination and potentially dangerous health risks.

The other options provided do not accurately define an allergen. Medications that react with certain foods address interactions unrelated to allergic reactions. Poisons associated with improper food storage do not encompass the concept of allergens, which are specific food proteins causing allergic responses. Taste enhancers may contribute to flavor but are not related to allergies. Thus, identifying an allergen as a substance causing allergic reactions is vital for ensuring food safety and protecting consumers' health.