Yes. FDA's standard of identity for yogurt specifies minimum milkfat content, nonfat milk solids, and the required bacterial cultures (Lactobacillus bulgaricus and Streptococcus thermophilus). Imported products labeled as 'yogurt' must meet these compositional requirements to be sold under that name in the US. Products that do not meet the standard may need to be labeled differently (e.g., 'cultured dairy product'), which can affect marketing and retail placement.

Yogurt classifies specifically under 040320, while kefir and other fermented or acidified milk products — including sour cream, cultured buttermilk, and similar items — fall under 040390. The distinction can matter for duty rates and TRQ applicability, as some lines within 040390 carry different tariff treatment than yogurt. Importers should confirm the specific subheading at the 10-digit level for each product type.