law: The Food Safety and Standards Act, 2006 
  Chapter IV General
  
  Provisions as to Articles of Food
  19. Use of food
  
  additive or processing aid. – 
  No article of food
  
  shall contain any food additive or processing aid unless it is in accordance
  
  with the provisions of this Act and regulations made there under.
  
  Explanation.-For the purposes of this section, "processing aid" means
  
  any substance or material, not including apparatus or utensils, and not
  
  consumed as a food ingredient by itself, used in the processing of raw
  
  materials, foods or its ingredients to fulfill a certain technological purpose
  
  during treatment or processing and which may result in the non-intentional but
  
  unavoidable presence of residues or derivatives in the final product.