Bring a large pot of water to a boil over medium heat. Sprinkle with a generous pinch of salt and add in the fresh green beans. Cook until the beans are just tender, about 8 minutes. Drain and shock the beans in ice water to halt the cooking process. Strain the beans once more and set them aside.
Put the fresh and canned beans, scallions, bell pepper, Italian parsley, marjoram, if using, and Champagne Vinaigrette into a large serving bowl, and toss everything together to combine. Season the salad, to taste, with salt and black pepper. Serve and enjoy.
Mix together the garlic, mustard, vinegar, lemon juice, honey, hot sauce, salt and black pepper in a large bowl. Whisk in the olive oil in a slow continuous stream until the dressing has emulsified. Alternatively, you can add the ingredients to food processor or blender and puree until smooth.