Toast slices are essential (try to reduce fat with whole wheat toast). On this basis, you can add your favorite ingredients, such as eggs, meat floss, chicken and so on. Those who don't like tomatoes can also use cucumbers/pitaya/mangoes/peaches instead. Lettuce is recommended to use ball lettuce, which is better to eat raw; Bacon suggested replacing it with ham slices without starch, which is lower in fat and healthier.