The Science of XO Sauce: Umami Reimagined
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The Science of XO Sauce: Umami Reimagined

2026-04-27Master Class Series

The Science of XO Sauce: Umami Reimagined

XO Sauce is often called 'Cantonese Liquid Gold'. At Congee Queen, we hand-craft ours using premium dried scallops (Conpoy), Jinhua ham, and dried shrimp, combined with a precise ratio of chili and garlic.

The Reduction Protocol

The ingredients are shredded by hand and slow-simmered in oil for hours until the moisture is replaced by a concentrated essence of umami. This involves a dangerous dance of temperature management—too cold and the ham doesn't render; too hot and the scallops turn bitter.

"XO Sauce is the ultimate test of a chef’s respect for premium ingredients."

We use this sauce sparingly but strategically, like in our XO Pan-Fried Turnip Cakes, where it adds a layer of aristocratic depth to a humble staple. It is the hallmark of luxury in Cantonese innovation.

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