HTS code 2103.90.20.00 covers "Sauces and preparations therefore; mixed condiments and mixed seasonings; mustard flour and meal and prepared mustard › Other › Sauces derived or prepared from fish" under the US Harmonized Tariff Schedule. This is the official duty rate charged by US Customs when this product is imported into the United States, sourced directly from the U.S. International Trade Commission and refreshed daily.