Mushroom Salad With Mustard Vinaigrette

• dijon-style mustard↗1⁄4 cup
• wine vinegar↗1⁄4 cup
• dried oregano, crushed↗1⁄2 teaspoon
• dried tarragon, crushed1⁄2 teaspoon
• salt↗1⁄4 teaspoon
• pepper↗1⁄4 teaspoon
• olive oil or 1/2 cup salad oil↗1⁄2 cup
• fresh mushrooms, sliced (4 1/2 cups)↗12 ounces
• pitted ripe olives, halved↗1⁄2 cup
• tomatoes, slices for garnish (optional)↗
• watercress leaf, for garnish (optional)↗

Step-by-step instructions

1. 1

   In a large mixing bowl combine mustard, vinegar, oregano, tarragon, salt, and pepper.

2. 2

   Using a wire whisk, blend in oil.

3. 3

   Stir in mushrooms and olives.

4. 4

   Cover and chill at least 2 hours.

5. 5

   Serve on individual plates with tomato slices and a watercress sprig.