The Institute of Food Technologists says food science is "the discipline in which the engineering, biological, and physical sciences are used to study the nature of foods, and the improvement of foods for the consuming public."
Depending on where you choose to study, your degree will be assessed on various weightings towards lectures, tutorials, practical lab work, workshops, written exams, independent study, and personal tutoring. A final year dissertation is also quite common
Requirements to study food sciences differ depending on the university. A levels in Maths and Science are required.
Always confirm the entry requirements for the particular university/course you are interested in.