While the potatoes are roasting, prepare the green beans. Steam the green beans in a steamer pot for about 5 minutes. Plunge the green beans in a bowl of ice water to cool them after they are done steaming. Drain the beans and cut them into thirds. Add sliced shallots and the green beans to a bowl.
04Whisk together the dressing ingredients. When the potatoes are done cooking, add them to the bowl of beans and shallots, and pour the dressing over the salad. Mix well and serve the salad warm.