Nat's Spicy Mustard Sauce

This mustard sauce is the best. I first had it served with sausage rolls, but you can serve it with anything!

• Ready In: 17 mins
• Serves: 5

Ingredients

• 1⁄3-1⁄2 cup dry mustard
• 1⁄2 cup white vinegar
• 1⁄2 cup white sugar
• 1  egg yolk

Directions

1. Mix mustard& vinegar in a small bowl.
2. Cover and let stand at room temperature overnight.
3. Next day, put mixture in a saucepan, add egg and sugar.
4. Simmer on low heat until it thickens.
5. When cool, put in covered container and keep in fridge.