Relating to: serving margarine as a substitute for butter in certain circumstances.

SB 645 prohibits restaurants from serving margarine as a substitute for butter unless a customer specifically orders it. It also bars state institutions (like hospitals or prisons) and schools from using margarine instead of butter without a health-related exception - such as a physician's order for a specific patient or student. The bill specifically requires schools to get explicit permission from a student, parent/guardian, or healthcare provider to substitute margarine, while maintaining the existing ban on unrequested use in public dining.