1604.14.10 - In oil

This HTS classification, 1604.14.10, specifically covers prepared or preserved tuna and skipjack that are packed "in oil." This implies that the fish has been processed and then preserved within a liquid medium of oil, which may include vegetable oils, olive oil, or other edible oils. The preparation can include methods such as canning, cooking, or other processing techniques before being sealed in an airtight container with the oil.

This category is distinguished from its sibling category, "Not in oil," which would cover similar preparations of tuna and skipjack that are preserved in mediums other than oil, such as water, brine, or sauces. The presence and type of the preserving medium are critical for differentiating these two classifications.

Within this category, further subdivisions exist to refine the classification based on packaging and specific product types. Subcategories address items packed in flexible containers of a specific weight, such as foil pouches, and a general "Other" category for remaining preparations not meeting those specific packaging criteria. These subsequent classifications allow for more granular tracking and duty assessment based on the final presentation and weight of the product.