Red wine sauce (Sauce au vin rouge)

Sauce au vin rouge, which translates to "red wine sauce" in English, is a classic French sauce frequently used to complement various dishes, especially red meat dishes like châteaubriand. The core ingredients typically include red wine, shallots, and butter.

Broths or demi-glace (reduced veal or beef stock) can be added for extra richness. Herbs like thyme or bay leaf might be included for additional depth of flavor. The shallots are usually sauteed in butter, then red wine is added and reduced to concentrate the flavors.

Broth or demi-glace may be incorporated at this point, followed by simmering to further develop the sauce. Finally, butter is often whisked in to create a smooth and glossy finish.