Hot Mustard Sauce
Ingredients
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- 4 tbsp mustard powder
- 4 tbsp water
- 1 tbsp rice vinegar
- 1 tsp sugar
- 1/4 tsp kosher salt
Instructions
1. In a small bowl, whisk the mustard powder with the cold water until perfectly smooth, then let stand 8–10 minutes until the aroma is sharp and the heat tastes fully developed.
2. Stir in the rice vinegar, sugar, and kosher salt until dissolved and evenly blended.
3. Transfer to a small serving dish; use right away for maximum heat, or cover and refrigerate up to 3 days.
Hot mustard sauce is a sharp, sinus-clearing condiment with a clean mustard bite and a thin, dippable texture. Made by hydrating ground brown mustard seeds, it delivers a piercing, volatile heat that peaks quickly and fades fast. A touch of gentle acidity and sweetness can round the edges while keeping the focused, brassy character intact.
This style traces to mustard pastes served with cold meats and dim sum in Chinese cookery, and it became a fixture alongside egg rolls and roast pork in Cantonese-American restaurants. Its heat chemistry depends on myrosinase acting on glucosinolates after hydration; time, temperature, and acidity all influence the result. Because the aromatic isothiocyanates dissipate, the sauce is typically mixed to order for the strongest punch.