Protein concentrates and textured protein substances (such as soy protein isolate or textured vegetable protein) classify under 210610. Meal-replacement products formulated with multiple nutrients and sold as food preparations generally fall under 210690 if they do not fit a more specific heading. Products marketed as dietary supplements in capsule or tablet form typically classify under the pharmaceutical or supplement headings rather than here.

A syrup or concentrate intended to be diluted before consumption — and not itself a finished beverage — generally classifies as a food preparation under 2106 rather than as a beverage. Once the product is ready to drink without further dilution, it moves to the appropriate beverage heading. The degree of dilution required and the product's commercial presentation are the key classification factors.