Nicoise Salad is a French salad that is popular in Hanoi. It is made with boiled potatoes, green beans, tomatoes, hard-boiled eggs, olives, and tuna. The salad is typically dressed with a vinaigrette made from olive oil, Dijon mustard, and red wine vinegar. Nicoise Salad is a hearty and satisfying salad that is perfect for a main course.