Sauce Robert
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Sauce Robert (French pronunciation: [sos ʁɔbɛʁ]) is a brown mustard sauce and one of the small sauces, or compound sauces, derived from the classic French demi-glace, which in turn is derived from espagnole sauce, one of the five mother sauces in French cuisine (béchamel, velouté, espagnole, sauce tomate, and hollandaise).[1]
Sauce Robert is made from chopped onions cooked in butter without color, a reduction of white wine, pepper, an addition of demi-glace and is finished with mustard.[2]
It is suited to red meat, specifically pork, typically grilled pork.[3]