Reduction (cooking)
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Reduction Cooking
Stock being reduced in a pan

In cooking, reduction is the process of thickening and intensifying the flavor of a liquid mixture such as a soup, sauce, wine, or juice by simmering or boiling.[1]

Reduction is performed by simmering or boiling a liquid such as a stock, fruit or vegetable juices, wine, vinegar, or a sauce until the desired concentration is reached by evaporation. This is done without a lid, enabling the vapor to escape from the mixture. Different components of the liquid will evaporate at slightly different temperatures, and the goal of reduction is to drive away those with lowest points of evaporation.

While reduction does concentrate the flavors left in the pan, reducing too much will drive away all liquid in the sauce, leaving a "sticky, burnt coating" on the pan.[2]

Sauces from basic brown sauce to Béchamel sauce and even tomato sauce are simmered for long periods (from 1 to 10 hours) but not boiled. Simmering not only develops the maximum possible flavor, but also allows impurities to collect at the top and be skimmed off periodically as the sauce cooks. Boiling diffuses the impurities into the liquid and results in a bitter taste and unclear stock.[3] Broths are also simmered rather than boiled, and for the same reasons.[3](pp304-5)


Common preparations involving reductions include:


  1. ^ "Technique: Making a Sauce Reduction". The Kitchn. Retrieved 2015.
  2. ^ Petrosky, Maureen C. "How To Make A Reduction". Food Republic. Retrieved 2015.
  3. ^ a b The Culinary Institute of America (2011). The Professional Chef (9th ed.). Hoboken, New Jersey: John Wiley & Sons. pp. 268-70 (brown sauce), page 295 (Béchamel Sauce and Tomato Sauce). ISBN 978-0-470-42135-2. OCLC 707248142.

  This article uses material from the Wikipedia page available here. It is released under the Creative Commons Attribution-Share-Alike License 3.0.



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