Caramel Sauce

This is a cornerstone of Vietnamese cooking. The term nuoc mau was originally coined in southern Vietnam. Northerners know this same ingredient as nuoc hang (merchandising water), probably because it was so often used by food hawkers to enhance the appearance of their wares. Its ability to impart incredibly savory-sweet flavors is the key to simmering meats, seafood, eggs, and/or tofu for everyday kho dishes. Some cooks substitute brown sugar, but the results tend to be too sweet. The inky sauce also lends rich brown color to grilled meats, much as molasses does in American barbecue. Traditionally, the sauce is made by pouring boiling water into the caramelized sugar, a somewhat dangerous step that causes the mixture to bubble and spew dramatically. This method immediately arrests the cooking, so that the sugar doesn’t burn to a bitter black stage. I find it easier to place the pan in a sink partially filled with water, which cools the caramelized sugar, halting the cooking, and then add the water to dilute the sugar. The result with both approaches is the same bittersweet, inky sauce that is a staple in every Vietnamese kitchen.