1. A sandwich weighs about 100 grams and contains about 240 calories. It is a high-calorie food.

2. It is a portable food mainly made of some flour, meat products, eggs, salad dressing, tomato sauce and vegetables. It tastes delicious and is relatively rich in nutritional value. The carbohydrates, proteins, amino acids, and chlorophyll contained in it are relatively balanced, which not only promotes metabolism, but also promotes intestinal peristalsis.

3. However, it should be noted that eating too much can easily cause calories to be converted into fat, thus causing obesity.