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I finally got on the case to create a McDonald's hot mustard sauce copycat recipe—as it turns out, it's an easy hack. Dried mustard mixes it up with sweet and sour flavors in a saucepan over medium heat. Cornstarch thickens and stabilizes, and a little habanero pops in for the perfect spicy punch. Use it for dipping, use it for spreading...use it again and again, since you'll be making about a cup of the stuff.
Find more of my McDonald's recipes here.
Source: Even More Top Secret Recipes by Todd Wilbur.
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- 1/2 cup water
- 1/2 cup corn syrup
- 1/3 cup plus 1 tablespoon white vinegar
- 2 tablespoons ground dried mustard
- 4 teaspoons cornstarch
- 1 tablespoon granulated sugar
- 1 tablespoon vegetable oil
- 1/2 teaspoon ground turmeric
- 1/2 teaspoon salt
- 10 to 14 drops habanero hot sauce (I used Tobasco brand)
1. Combine all ingredients in a small uncovered saucepan. Whisk until smooth.
2. Turn the heat to medium and bring the mixture to a boil, stirring often. Sauce should thicken in 2 to 3 minutes after it begins to boil. Remove the sauce from heat and chill it in refrigerator in a covered container.
Makes 1 cup.

For over 30 years I've been deconstructing America's most iconic brand-name foods to make the best original copycat recipes for you to use at home. Welcome to my lab.
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