Add all the ingredients to a clean jam jar (or other tight lidded container) and shake well to combine and emulsify.
Taste to check the seasoning and if you like the consistency.
If you prefer a thinner dressing, you could add extra olive oil or even water and shake well again.
Serve and enjoy!
Notes
You can use mild or extra virgin olive oil.
Wholegrain or Dijon mustard work well in this dressing.
Thin with water and shake well.
Each serving is about 2 tablespoons, but you can use less.
This salad dressing will last up to 2 weeks in the fridge. Just remember to give it a good shake before serving.
You can freeze salad dressing. But as this is a quick small batch dressing that takes seconds to make, there is no point. Just make it as and when you need it.