This poster presents a method for authenticating Iberian acorn-fed (“Bellota”) ham using trace element analysis. By measuring the levels of selected elements (e.g. Fe, Cu, Zn, Rb and Sr) in ham and acorn samples, the study identifies characteristic chemical profiles linked to feeding regime and geographical origin. Samples from Spain and Portugal were analysed alongside non-acorn-fed hams from Europe and South America. The results show that acorn-fed Iberian hams can be clearly distinguished from other products based on their elemental composition. A correlation between acorns and the resulting ham is also observed, indicating potential for traceability from feed source to final product. This approach supports food authentication and fraud prevention in high-value meat products. Further validation with a larger sample set is needed to support certification use.