Whisk together vinegar, oil and mustard in a serving bowl.

Whisk oil, stock and vinegar in serving bowl; add mushrooms.

In a serving bowl, whisk the oil, vinegar and mustard.

Meanwhile, in a serving bowl, whisk oil, vinegar and mustard.

Whisk oil and vinegar in bowl large enough to hold all of the ingredients.

Whisk oil and vinegar in a salad bowl and add greens.

Whisk oil, vinegar and mustard in a large bowl.

Whisk the oil, vinegar, thyme and oregano in large bowl.

In salad bowl, whisk oil and vinegar with mustard.

In serving bowl, whisk the oil and vinegar together.