To prepare a sweet and sour vegetable salad beans and grains recipe, you will first need to gather your ingredients. You will need the following ingredients: 1 pound romaine lettuce, 1 cup chopped radishes, 2 tablespoons olive oil, 1/2 teaspoon each kosher salt and ground black pepper. 2 cups diced red bell peppers. 1 tablespoon dried or fresh thyme. Salt and pepper to taste. Toss the vegetables with the dressing.