Fish sauce are made with anchovies, mackerel, scabbard fish and salt. The bigger the fish, the more mercury you might expect, especially if predator fish like scabbard fish. They do not have any additives like sugar, hydrolyzed protein, or preservatives. Vietnamese prefer sauces without a strong smell, and transparent with a deep golden amber color. "First press" fish sauce, meaning the sauce is bottled from the first time the fermenting barrels are drained, also indicates quality. Lastly, when measuring the nitrogen level of fish sauces (N), most fish sauce on the market falls within the mid 20N range. Anything over 30N is
Velouté sauce form the roux and a light chicken or fish stock, with some salt and pepper to season as needed. The sauce produced is commonly referred to by the type of stock used (e.g. chicken velouté). "Sauce velouté" is often served on poultry or seafood dishes, and is used as the base for other sauces. Sauces derived from a velouté sauce include: Velouté sauce A velouté sauce () is a savoury sauce, made from a roux and a light stock. It is one of the five "mother sauces" of French cuisine listed by Auguste Escoffier in the 19th century, along with