Tuna Sandwich
1.
Wash the lettuce
2.
Wash the rest of the vegetables separately, shred and cut into strips for later use
3.
Bread bake for 5 minutes
4.
Prepare the tuna for mashing
5.
Take out the toasted bread and spread the tuna evenly
6.
Put on lettuce
7.
Then add cucumber, green pepper and onion in turn
8.
Squeeze the salad dressing and tomato sauce
9.
Just cover with another slice of bread
Tips:
Some tuna, such as bluefin tuna, can use the metabolism of swimming muscles; the blood temperature in the body is higher than the outside water temperature. This physiological function enables the tuna to adapt to a larger water temperature range, so that it can survive in lower temperature waters.