Prepare a large ice bath; set aside. Fill a stockpot with water; bring to a boil, and add a generous amount of salt. Add green beans and wax beans to boiling water, and cook just until they are crisp-tender and their color brightens, 3 to 4 minutes. Transfer beans to ice bath to stop cooking and to preserve the color. Drain, and pat dry with paper towels. Slice larger beans in half lengthwise. Set aside in a large bowl.
Make vinaigrette: In a small bowl, combine shallots, capers (if using), vinegar, and a pinch of salt; let stand 15 minutes. Whisking constantly, slowly add olive oil.
Meanwhile, slice peppers as thinly as possible using a sharp knife or mandoline. Add to bowl with beans. Drizzle vinaigrette over, and toss to combine; season with salt and black pepper. Just before serving, tear basil and mint leaves into small pieces, and crumble ricotta salata. Stir herbs and cheese into salad, and serve.
lkane12..... loved this recipe ...didn't have wax beans so used all green beans and did use capers. Everyone loved it and it's definitely a keeper for us. had loads of green beans from my garden so very nice recipe.
Splashed a little sherry in the vinagrette and used white wine vinegar