Business and Professions Code § 23016
CHAPTER 1. General Provisions and Definitions
“Rectifier” means every person who colors, flavors, or otherwise processes distilled spirits by distillation, blending, percolating, or other processes. “Rectifier” does not include an on-sale licensee that colors, flavors, or blends distilled spirits or wine products on the on-sale licensed premises to be consumed on the licensed premises.