The Essential Finishing Touch for Thai Culinary Excellence. Dragonfly Brand Black Soy Sauce (known in Thailand as Si-Ew Dahm) is a rich, syrupy, and deeply flavorful condiment that is essential for authentic Thai cooking. Produced by the world-renowned Kwong Hung Seng company, this sauce is aged longer than thin soy sauce to create a thick, dark, and mildly sweet profile similar to balsamic glaze or molasses.

Iconic Coloring: It is the key to achieving the dark, charred look of Pad See Ew (Thai Stir-Fried Noodles) and the deep mahogany glaze of "Red Braised" pork and poultry.

Rich & Syrupy: Its thick viscosity helps it cling to noodles and meats, providing a beautiful gloss and a subtle, smoky sweetness.

Complex Flavor Profile: While less salty than "Thin" soy sauce, it offers a dense layer of caramelized soy and brown sugar notes that add "body" to soups and stews.