Cross-category guides to understanding how food is identified, labelled and traced, whether it is oil, meat, cheese, preserves or cured products. This hub covers PDO, PGI and TSG schemes, mandatory label information, use-by and best-before dates, origin and provenance, primary ingredients and traceability. These concepts appear across many food categories and are worth understanding once so that any product can then be interpreted more confidently. Where a topic depends on regulation or food safety, the guides rely on official European Union and Spanish food-safety sources.