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Sauces / Reference

Reductions & Jus

Stocks, jus, and glazes. Concentration with a defined stopping point.

This is grown-up sauce.

Stocks reduced properly. Collagen turned to silk. Flavor concentrated instead of just salted.

This is where "restaurant-level" actually comes from.

Time matters here. Discipline matters more.

Recipes

Reduction

Demi-Glace

Espagnole reduced with discipline. Glossy, powerful, controlled.

1–2 hours with prepared bases
Reduction

Chicken Jus

Roasted bones reduced properly. Not gravy. Not broth.

5–6 hours
Reduction

Beef Jus

Dark, structured, intentional. Built in layers.

7–9 hours
Reduction

Glace de Viande

Reduced until it barely moves. Sauce concentrate. A spoonful changes everything.

2–4 hours with prepared stock

Reduce to a result, not a stopwatch

A wide pan evaporates faster than a narrow one. A gentle simmer gives you more control near the finish. Measure volume, taste, and check how the liquid coats a spoon; the timer supplies a reminder, not a verdict.

  • Jus: a light, concentrated meat sauce. Gelatin supplies some body, without flour.
  • Demi-glace: the classical recipe here combines equal volumes of espagnole and brown stock, then reduces by half.
  • Glace: stock reduced much further into a glaze, used in small amounts.

Begin with unsalted stock. Water leaves the pan; salt stays behind. A weak stock reduced aggressively may become salty before it develops useful body.

See the reduction math →