Meat-derived extracts and juices are subject to USDA FSIS oversight and must come from FSIS-approved foreign establishments. Fish and shellfish extracts fall under FDA jurisdiction. A single product derived from both meat and seafood may trigger review by both agencies depending on its composition.

Heading 1603 covers concentrated extracts and pure juices that have not been formulated into a finished soup or broth product. Once an extract is combined with other ingredients — vegetables, starch, seasoning — to create a ready-to-use soup preparation, it typically moves to Chapter 21 (miscellaneous food preparations).