Yes, lettuce and Flammulina velutipes are low-calorie foods, which help to maintain a healthy weight and nutrient intake.

Lettuce is a kind of vegetable rich in water and dietary fiber. The calorie per 1g of lettuce is about 13 calories, and it is also rich in vitamins and minerals, such as vitamin C, vitamin K, potassium and magnesium. Lettuce can be used as an ingredient in salads, sandwiches or burritos, or it can be eaten raw or added to cooking.

Flammulina velutipes is a common edible fungus, and the calorie per 1g of Flammulina velutipes is about 3 calories. Flammulina velutipes is rich in various nutrients, such as dietary fiber, protein, vitamins and minerals, such as vitamin B, potassium and phosphorus. Flammulina velutipes can be used as an ingredient in hot pot, stir-fry or soup, and can also be cooked separately.

It should be noted that although lettuce and Flammulina velutipes are low-calorie foods, if a large amount of oil, salt and other seasonings are added in the cooking process, they may increase the intake of calories and other nutrients. Therefore, in the cooking process, we should try to keep the original flavor of food and use less seasonings such as oil and salt.