Selat solo is an Indonesian dish believed to have originated as a European salad that’s been adapted to Javanese tastes. It hails from Solo in Central Java, hence the name. The dish is made with a combination of beef tenderloin, onions, soy sauce, salt, pepper, sugar, vinegar, shallots, cloves, nutmeg, hard-boiled eggs, mayonnaise, and vegetables such as carrots, lettuce, potatoes, and green beans.