Recipe for Balsamic Dressing
3/4 cup extra-virgin olive oil
1/4 cup balsamic vinegar
1 tbsp mustard
Combine the olive oil and balsamic in a jar with an airtight lid. Add a pinch of salt and black pepper. Screw on the lid and shake vigorously.
This vinaigrette will keep on the counter for several weeks (refrigerate if you added any fresh ingredients). The oil and vinegar will separate a few minutes after shaking — shake to recombine before dressing your salad.