When a preparation contains more than one species, classification generally follows the species that predominates by weight. If pork predominates, the product falls under the pork subheadings (160241–160249); if beef predominates, it falls under 160250. Mixed preparations where no single species dominates may fall under 160290.

Certain prepared beef lines may be subject to tariff-rate-quota provisions that raise the effective duty rate above the in-quota volume. Pork preparations from some origins have faced antidumping or countervailing duty investigations. Importers should verify the specific tariff line and country of origin against current CBP and USITC guidance before shipment.