Cá Kho Tộ
Caramelized Clay-Pot Catfish
The Vietnamese Pantry
Nước Màu
Caramel Sauce
The dark caramel that gives every kho its colour and its faint, savory bitterness. You can buy it — but it's a five-minute thing to make.
Nước màu (sometimes nước hàng) is the secret behind the deep mahogany colour of a good kho. It is nothing more than sugar cooked past golden to a dark, almost-burnt caramel, then stopped with a little water. That edge of bitterness is the point — it balances the sweetness and makes a braise taste savory rather than candied.
Southern cooks keep a jar of it by the stove. It takes five minutes and one ingredient, and once you have it, braises come together fast.
What it is
A dark sugar caramel taken further than you'd dare for a dessert — to the colour of strong coffee, right at the edge of burning — then arrested with water so it stays pourable. Cooked that far, the sugar loses most of its sweetness and turns deeply savory and slightly bitter, which is exactly what a kho needs.
Made from Just sugar and water
Colour Dark amber to coffee-brown
Tastes Savory and faintly bitter
Keeps Months in a sealed jar at room temperature
How to use it
In any kho
One to three tablespoons gives a braise its colour and rounds out the fish sauce. The single ingredient that makes a kho look and taste right.
In marinades
A teaspoon in a grilled-pork marinade helps it caramelize and char beautifully over fire.
For colour
A few drops will deepen the colour of a clear braise or a clay-pot dish without making it sweet.
No caramel sauce? Substitutes
Make your own
Genuinely the best option — 100g sugar
Dark brown sugar + molasses
Not the same
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