This simple red wine vinaigrette is perfect on a spinach salad or in marinate! Store in the fridge and use on your favorite foods year round!
Place the salt, pepper, and mustard in a medium bowl.
Add a little bit of oil, and blend with a whisk.
Add a few drops of the red wine vinegar and blend well.
Add the remaining oil and vinegar gradually, stirring constantly, until all ingredients are blended.
Place in a container with a lid and refrigerate. Shake well before using.