Nicoise salad is a French salad that originated in the city of Nice. It is made with boiled potatoes, green beans, tomatoes, hard-boiled eggs, olives, and tuna, dressed with a vinaigrette made from olive oil, Dijon mustard, and red wine vinegar. The combination of the different ingredients creates a satisfying and flavorful salad. Nicoise salad is a great choice for those looking for a hearty and filling salad option in Heraklion.