To properly reduce balsamic glaze without burning it, use low heat, stir frequently, and watch it closely, removing it from the heat once it coats the back of a spoon.
Reducing balsamic vinegar into a glaze requires patience and attention to detail. The goal is to evaporate excess water and concentrate the flavors without scorching the sugars. Here's a step-by-step guide:
Choose the Right Pan: Use a saucepan with a heavy bottom. This helps distribute heat evenly and prevents hot spots that can lead to burning.
Start with Quality Balsamic: The better the balsamic vinegar, the better the glaze. Look for balsamic vinegar di Modena (IGP) for a good balance of sweetness and acidity.
Low and Slow: Pour the balsamic vinegar into the saucepan and place it over low heat. High heat will cause the sugars to caramelize too quickly and burn.
Stir Frequently: Stir the balsamic vinegar frequently with a heat-resistant spatula or spoon. This helps distribute the heat evenly and prevents sticking.
Watch Carefully: Keep a close eye on the balsamic vinegar as it reduces. It will start to thicken and become syrupy. The reduction time can vary depending on the heat and the amount of vinegar, but it usually takes about 15-30 minutes.
Test for Doneness: To test if the glaze is ready, dip a spoon into the balsamic vinegar and then lift it. If the glaze coats the back of the spoon and a finger drawn through it leaves a clear line, it's ready.
Remove from Heat: Once the glaze reaches the desired consistency, remove it from the heat immediately. It will continue to thicken as it cools.
Cool Completely: Allow the glaze to cool completely before using it. This will allow it to thicken further and develop its full flavor.
Don't add any sugar to the balsamic vinegar while reducing. High-quality balsamic vinegar already contains natural sugars. Adding more can increase the risk of burning and make the glaze overly sweet. If you want a sweeter glaze, consider adding a touch of honey *after* the reduction process.