Ingredients:

1/2 cup olive oil

3 teaspoon balsamic vinegar

1 teaspoon dijon mustard

salt & pepper

In a small bowl, mix vinegar, dijon, salt and pepper. 

Slowly drizzle in olive oil while whisking contents of bowl.

Dressing should thicken.

Serve over green salad.

Balsamic vinegar improves with age; buying aged balsamic adds a slightly sharper taste when it's used.