Awesome Tuna Sandwich - cooking recipe

Ingredients

2 slices white bread or 2 slices whole wheat bread
mayonnaise
butter
1 (8 ounce) can tuna
lettuce

Preparation

Open the tuna and drain it.
Mix the tuna with as much mayo as you want.
Spread butter on one slice of bread and mayo on the other.
Spread the tuna-mayo mixture on.
Put on lettuce.
Put both slices together and serve.