First, prepare the bulgur by placing it into a large pot with a teaspoon of salt. Pour the 2-1/4 cups of boiling water over the top and cover with a lid. Bring to a boil and let simmer for about 15 minutes until all the water is absorbed. Stir occasionally. Lightly fluff with a fork and set aside to cool. Steam broccolini separately in a pot of boiling water for a few minutes until al dente. Refresh under cold running water and drain. Toss string beans together with the broccolini into the bulgur, adding parsley and chopped hazelnuts. Make the dressing by whisking together the oil, vinegar, garlic, black pepper and a 1/4 teaspoon of salt. Pour over the salad, toss it and allow it to stand 15 minutes before serving. Eat at room temperature or chill.