Oregon Revised Statutes Food and Other Commodities: Purity, Sanitation, Grades, Standards, Labels, Weights and Measures § 616.560

(1) A chain restaurant shall determine typical values of the following for each menu item offered by the restaurant:

(2) The typical values described in subsection (1) of this section must be based on calorie and nutrient databases, verifiable reference values, government standards, laboratory testing or other methods for determining nutritional values recognized by the Oregon Health Authority by rule.

(3) The chain restaurant shall maintain a written list of the typical values described in subsection (1) of this section for all of the menu items of the restaurant and make copies of the list available for distribution to customers. The chain restaurant shall provide a copy of the list to a customer who is present in the restaurant and requests nutritional information regarding any menu item.

(4) A chain restaurant may not make available to customers any typical values determined under this section that are substantially inaccurate or that the restaurant knows or should know to be false or misleading.