Ingredients

• 1 cup grainy mustard
• 8 medium shallots, roughly chopped (About 1 Cup)
• 1/4 cup chinese black vinegar
• 1/4 cup soy sauce
• 2 tablespoons sugar
• 2 cups grapeseed oil or 2 cups canola oil
• kosher salt
• ground black pepper
• 1/2 cup naturally brewed rice wine vinegar