Olivier Salad, also known as Russian Salad, is a staple dish in St. Petersburg. It is a hearty salad made with boiled potatoes, carrots, peas, pickles, and mayonnaise. Some variations of the salad also include boiled eggs, ham, or chicken. Olivier Salad is a popular side dish or appetizer during festive occasions and is loved for its creamy and flavorful taste.