Ingredients

• 4 tablespoons unsalted butter

• 4 tablespoons all-purpose flour

• ½ cup small-diced onion

• ¼ cup small-diced carrot

• ¼ cup small-diced celery

• 2 tablespoons tomato paste

• 1 quart brown beef or veal stock, warmed

• 1 bay leaf

• 2–3 sprigs fresh thyme

• 3–4 parsley stems

• 6 whole black peppercorns

Instructions

Melt the butter in a heavy-bottomed saucepan over medium heat. Add the flour and cook, stirring frequently, until the roux develops a deep brown color and a nutty aroma, about 8–12 minutes. Take care not to burn it.

Add the onion, carrot, and celery to the brown roux. Cook for about 5 minutes, stirring often, until the vegetables begin to soften and lightly brown.

Stir in the tomato paste and cook for 2–3 minutes, allowing it to caramelize slightly.

Gradually whisk in the warm brown stock until the sauce is smooth. Add the bay leaf, thyme, parsley stems, and peppercorns.

Bring to a gentle simmer, then reduce the heat to low. Simmer uncovered for 45–60 minutes, skimming excess fat and impurities from the surface as needed.

Strain the sauce through a fine-mesh strainer. Return to the heat if additional reduction is needed to reach the desired consistency. Adjust seasoning only after the sauce has finished reducing.

Chef's Notes

Espagnole is traditionally made with a rich brown stock; veal stock produces the most classical flavor and body.

Espagnole is the foundation for demi-glace and sauces such as Bordelaise, Chasseur, Robert, Madeira, and Marchand de Vin.