The secret make this buger tasty, it's from patty...those patty recipe and fragrance aroma,oringinal from 1979 still taste same,...special herbs,and spice's....make unique flavors,with combinations mayonaise and chili sause,vegetable,...onions, cabbage,lettuce,wraping eggs,white paper,and maggi soy sause flavors...yummy..❤❤❤❤❤