a sauce prepared from butter creamed with white wine, shallots, parsley and fish stock; -- also called Bercy sauce.

butter creamed with white wine and shallots and parsley

A French sauce with white wine and shallots as a base.

Bercy is a station of the Paris Métro, serving Lines 6 and 14.

Bercy is an area in the east of the city of Paris, France, north of the river Seine.