1901.90.28.00 - Dry mixtures containing less than 31 percent by weight of butterfat and consisting of not less than 17.5 percent by weight each of sodium caseinate, butterfat, whey solids containing over 5.5 percent by weight of butterfat, and dried whole milk, but not containing dried milk, dried whey or dried buttermilk any of which contain 5.5 percent or less by weight of butterfat 🖩

This HTS category, 1901.90.28.00, specifically classifies dry food preparations that are sophisticated mixtures, distinct from simpler preparations. These mixtures are characterized by precise ingredient ratios, requiring at least 17.5 percent by weight each of sodium caseinate, butterfat, whey solids (with over 5.5 percent butterfat), and dried whole milk. Crucially, these preparations must contain less than 31 percent by weight of butterfat and must *not* include dried milk, dried whey, or dried buttermilk that themselves contain 5.5 percent or less butterfat. This detailed composition is key to its classification.

This subcategory differentiates itself from other "Other" entries within heading 1901.90 by its highly specific dry mix formulation. For example, it is distinct from puddings ready for immediate consumption (1901.90.25.00) which are typically semi-liquid or paste-like and intended for direct consumption. It also differs from Cajeta (1901.90.32.00), which is a sweet, caramel-like confection often made from goat's milk and is not a dry mix. The emphasis here is on a dry, complex blending of milk-derived solids and butterfat for further processing or incorporation into other food items, rather than a ready-to-eat product or a specific confectionery.

As this is a leaf node in the HTS classification, there are no further subcategories under 1901.90.28.00. Therefore, the classification criteria are definitive at this level. Importers and exporters should focus on verifying the exact percentages of the specified ingredients – sodium caseinate, butterfat, whey solids, and dried whole milk – as well as ensuring the absence of dried dairy products with low butterfat content, to correctly apply this classification.