Ingredients
2 large Vidalia onions
2 cups water
½ cup cider vinegar
1 cup sugar
Mayonnaise, enough to moisten
Salt and pepper to taste
1 Tablespoon celery seeds
Directions
Boil together the water, vinegar and sugar. Pour over onions that have been peeled and thinly sliced. Marinate for 24–48 hours. Drain and pat dry. Add just enough mayonnaise to moisten. Add salt and pepper to taste. Stir in celery seeds.
Store in jar in refrigerator for up to two weeks. Great in sandwiches, salads or as a relish.