4 teaspoons cider vinegar |
2 teaspoons whole-grain mustard |
2 teaspoons fresh lemon juice |
3/8 teaspoon ground sumac |
2 small garlic cloves, minced |
1/2 teaspoon kosher salt |
1/4 teaspoon freshly ground black pepper |
6 tablespoons extra-virgin olive oil |
2 (6-inch) pitas, torn into bite-sized pieces |
1 cup chopped tomato |
1 cup sliced english cucumber |
1/2 cup diced red bell pepper |
1/2 cup chopped fresh flat-leaf parsley |
1/4 cup chopped fresh mint |
1/4 cup chopped arugula |
1/4 cup minced vidalia onion |
1 (15-ounce) can unsalted black-eyed peas, rinsed and drained |