Sliced Tomato & Onion Salad
Ingredients
1/4 cup Balsamic vinegar
3 tablespoons Water
1 teaspoon Olive oil
1 teaspoon Dijon mustard
1/4 teaspoon Coarsely ground pepper
1/8 teaspoon Salt
5 Medium unpeeled tomatoes (about 2 1/2 pounds)
1 Large purple onion, thinly sliced and separated into rings
2 teaspoons Minced fresh oregano