A two-day workshop titled “What You Eat: Applications of Biochemical Methods in Archaeology”, organized by the Archaeological Science in HK interdisciplinary initiative, was held on the 4th and 8th of March 2024 at CUHK. The workshop attracted over 30 participants from various departments across HK, including students and scholars from Anthropology, Biological Sciences, Cultural and Religious Studies, Philosophy, Public Health, and more. After an introduction to the basic principles of the method, participants prepared their own hair for stable isotope analysis and learned to use the program R to plot their data. We then had an exciting discussion on the meaning of the data and how it can help us understand the food practices of a society. The generated data will also be used for a student’s FYP!