What You're Doing

Simmering or boiling liquid to evaporate water content, concentrating flavors and thickening consistency. As water evaporates, dissolved solids become more concentrated, intensifying taste.

Visual Cues

Look for these signs to know your technique is working:

  • Volume decreasing visibly
  • Bubbles becoming smaller and more numerous
  • Liquid coating the back of a spoon
  • Surface becoming glossy

Why It Works

As water evaporates, the remaining dissolved solids become more concentrated. This intensifies all flavors proportionally and increases viscosity through gelatin concentration or remaining sugars.

Failure Modes

Avoid these common problems:

  • Heat too high - burning at edges
  • Not stirring - scorching on bottom
  • Over-reducing - sauce becomes too thick or bitter
  • Under-reducing - sauce too thin and flavors diluted

Requirements & Guidelines

  • Monitor consistency
  • Stir occasionally
  • Lower heat prevents burning
Technical Details (CKL)
reduce 5min until nappe