Egg Salad Sandwich ~With the ingredients of egg, mayo, mustard, onion, salt and pepper to complete this salad you are assured of having everything you need to make an emergency lunch. Got bread? Make a great sandwich. You can have lunch prepared in the time it take to hard boil those eggs. Have a cold? Sore throat? This can be the answer. I like yo chop some celery and add it in at times. Have a lot of left over eggs from the Easter Bunny? Place a few in a bowl as a centerpiece and snack for the kids. Use the rest chopped and add into the salad! A good standby, Egg Salad is great to keep on hand. stays fresh in the refrigerator 3-4 days.