The Nicoise Salad is a French salad that has gained popularity in London. It is made with boiled potatoes, green beans, cherry tomatoes, hard-boiled eggs, olives, and tuna. The salad is typically dressed with a vinaigrette made with Dijon mustard, olive oil, and red wine vinegar. The Nicoise Salad offers a delightful mix of flavors and textures, making it a satisfying and nutritious choice for salad lovers in London.