Shrimp and Pea Salad

1 cup cooked fish
1 cup celery
2 tablespoons pickle
1 cup salad dressing
1 cup peas

For Dressing

1 egg
2 tablespoons flour
1 teaspoon salt
½ teaspoon mustard
2 tablespoons fat
¾ cup milk
¼ cup vinegar
2 tablespoons corn syrup

Directions for making dressing: Mix all ingredients. Cook over hot water until consistency of custard.