Cereals other than maize that have been precooked or otherwise prepared while retaining their grain form—such as instant oats, precooked barley, or ready-to-cook wheat berries—occupy a commercially important niche between raw agricultural commodities and fully finished food products. The explicit exclusion of maize (corn) is a key classification boundary; precooked corn-based grain products fall elsewhere. FDA food facility registration and FSMA Prior Notice requirements apply at importation. Specification details such as moisture content, degree of precooking, and grain integrity are often central to both classification and buyer acceptance.

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