Start with a wide pan—more surface area means faster evaporation. Set the heat to a gentle simmer, not a rolling boil, to avoid burning the sugars. And resist the urge to stir constantly; lazy is okay here. Just check every few minutes until it coats the back of a spoon—that’s your cue.
A fun fact: reduction can shrink liquids by half to three-quarters of their original volume. That means a liter of stock becomes a half-cup of flavor power. Scale matters for timing, so don’t walk away from a small sauce—it can go from perfect to burnt in fifteen seconds.
Common Pitfalls and Fixes
Too salty? You can’t “unsalt” a reduction, so start with low-sodium stock or add a splash of water to dilute. Too thick? Whisk in a little more liquid—stock, wine, or even water—and taste. Too sweet? A splash of vinegar or lemon juice balances it out instantly. It’s a forgiving process if you stay awake.
And please, don’t oversalt early. Remember, as water evaporates, any salt you add becomes twice as potent. Season at the end, not the beginning, unless you love heartburn.
