Easy Ways to Measure a Reduction
Turn to your sewing basket or kitchen utensil holder for unexpected tools that takes the guesswork out of reducing liquids.
It can sometimes be tricky to tell, when reducing a liquid for a recipe, at what point it's simmered down to the desired amount. So you don't have to eyeball it, use a metal hem marker. Measure the liquid before starting, then set the hem gauge for the finished amount, checking periodically until it reaches the level of the gauge.
You can also use a wooden spoon to measure sauce reduction. Here's how: before you start reducing your sauce, dip the handle of a wooden spoon in the liquid to mark the depth. Later, you can dip again to see how much it has reduced.