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
Suprême sauce is made by placing three-quarters of a pint of white sauce into a saucepan, and when it is nearly boiling, adding half a cup of concentrated fowl stock. It should then be reduced until the sauce is quite thick, passed through a "chinois" strainer into a "bain-marie" and have added two tablespoons of cream. Suprême sauce "Suprême" sauce is one of the classic "small sauces" of French cuisine, that is, one made by combining a basic or mother sauce with extra ingredients. Traditionally, this sauce is made from a "velouté" sauce (a roux sauce made with a meat stock -