Menu construction is an important task for institutions that need to plan menus within
certain constraints. There is also a personal need for professional menu construction
by clients or patients who should eat according to a planned diet. For menu construction
and dietary analysis, there are several approaches (e.g., linear programming, genetic
algorithms, rule-based expert systems, etc.) and commercial IT systems. In this paper,
we propose a case-based approach for diet recommendation. Based on this approach,
we are going to construct an expert system which is intended to be employed in a health
record management system. Our approach is based on ripple down rules (RDR), however,
a special representation is also needed for patient attributes and rule actions.