The Faculty of STEM arranged a visit to the Technological and Higher Education Institute of Hong Kong (THEi) for class 3E on Life-wide Learning Day (19th November 2021). Students attended the “Rainbow noodles” DIY Workshop organized by Dr. Emily Tam, to learn the knowledge of natural dye for food processing. Extraction of natural dye from food was demonstrated to students. Students were given an opportunity to make their own noodles in different colours. Dr. Tam also introduced the Bachelor programs of THEi about food science to the S3 students. Our students were satisfied with this workshop on food science.