French dressing with mustard flavor

6 tablespoons salad oil
3 tablespoons of vinegar
1 teaspoon of mustard sauce
Sugar 1/2 tsp
a little Salt and black pepper

Stir salad oil and vinegar until small bubbles.
if thoroughly mixed, put rest of salad oil and stir them until you think it's enough
put the mustard sauce, sugar and black pepper.