Combine all of the ingredients except for the olive oil in a blender or food processor. Blend until well combined. Add the olive oil and pulse just a few more times. (You can also combine all the ingredients except the olive oil in a wide-mouth jar and blend with an immersion blender. Then add the olive oil and pulse a few more times until combined.) If the dressing is thicker than you like, add water, 1 tablespoon at a time and stir to combine, until desired consistency is reached.
Store in a airtight container in the refrigerator. Will keep well for a week to 10 days.
See Café Tips above in the post for more detailed instructions and tips to ensure success.