Ingredients

2 tablespoons Chinese mustard 

1 large egg yolk 

1/4 cup unseasoned rice vinegar 

2 tablespoons sugar 

1/2 cup grapeseed oil 

Preparation

In a medium bowl, mix together mustard, egg yolk, vinegar, and sugar. Slowly pour in oil while continuing to stir, forming an emulsion. Serve with egg rolls.