As a result of the recent international agreements on the use of Risk Analysis framework, international organization and governments have adopted risk assessment as a science-based process to ensure food safety in the food chain. This book introduces risk assessment methods considering both general aspects and specific ones to the type of hazard, that is, biological and chemical hazards. In addition, specific sections are intended to show more technical details on key elements of risk assessment such as separation of uncertainty and variability or application of sensitivity analysis. Specific examples are given to show readers how risk assessment techniques can be applied in practice.