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Demi-Glace

Demi-Glace

Rich French Demi-Glace

This is the sauce that transforms good cooking into restaurant-quality cooking. Two simple liquids — brown sauce and beef stock — slowly concentrate into something silky and intensely flavorful that coats the back of a spoon. It takes patience, but the result is pure liquid gold.

FrenchDinnerSauce
Prep10 min
Cook45 min
Total55 min
Servings
Difficultymedium

Ingredients

  • 1 leafbay leaf
  • 3 sprigfresh thyme sprigs
  • 3 stemsfresh parsley stems (save the leaves for something else)
  • 7 whole black peppercorns
  • 2 cupbrown sauce (Espagnole sauce)
  • 2 cuprich beef stock
  • salt
  • freshly ground black pepper

Instructions

  1. Bundle the bay leaf, thyme, parsley stems, and peppercorns in a square of cheesecloth. Twist the corners together and tie with kitchen twine, but leave one string long — you'll tie this to your pot handle so you can easily fish it out later.
  2. Pour both the brown sauce and beef stock into a heavy-bottomed saucepan. Crank the heat to medium-high and bring everything to a rolling boil, then immediately drop it to a gentle simmer. You want steady, lazy bubbles.
  3. Drop in your herb bundle and tie the long string to the pot handle. Now comes the waiting game — let this reduce by exactly half, which takes about 45 minutes. Stir occasionally and watch for the sauce to coat a spoon when you lift it out.
    45 min
  4. Pull the pot off the heat and immediately remove the herb bundle using the string. The herbs have done their job — discard the whole sachet.
  5. Set a fine-mesh strainer over a clean bowl and line it with a fresh piece of cheesecloth. Pour the sauce through slowly — this removes any remaining solids and gives you that perfect, glossy finish.
  6. Taste and adjust with salt and pepper. The sauce should be rich and coating, with a deep, concentrated flavor that speaks of hours of cooking even though you made it in less than an hour.