For salad dressing: soon mustard into a small bowl. Add the vinegar and whisk together with a fork. Add the oil and salt and whisk everything together.

For salad: wash and dry the lettuce.

Tear leaves in two.

Open and drain the can of tuna and the can of corn.

Dice the tomatoes and the green pepper.

Pour all ingredients together in large salad bowl.

Add salad dressing.

Toss well.

Bon appetite!!!!