(black butter) is melted butter
that is cooked over low heat until the milk solids
turn a very dark brown. As soon as this happens, acid
is carefully added to the hot butter, usually lemon juice
or a type of vinegar
. Some recipes also add a sprig of parsley
, which is removed from the hot butter before the acid is added.
Beurre noir is typically served with eggs, fish and certain types of vegetable.