Green Bean Puff

Directions

1. 1
   Combine green beans and celery in 5 cup casserole.
2. 2
   Mix together mayonnaise, mustard, salt and vinegar.
3. 3
   Gradually add the milk.
4. 4
   Beat egg white until stiff.
5. 5
   Fold into mayonnaise mixture and pile lightly on top of beans.
6. 6
   Sprinkle with paprika.
7. 7
   Bake 15 minutes at 400°, until sauce puffs and browns.