- 4 medium sweet onions, halved and thinly sliced
- 1/2 cup sugar
- 1/3 cup water
- 1/3 cup cider vinegar
- 1 cup mayonnaise
- 1 teaspoon celery seed
- Place onions in a large bowl. In a small bowl, combine the sugar, water and vinegar; stir until sugar is dissolved. Pour over onions. Cover and refrigerate for at least 3 hours.
- Drain and discard liquid from onions. Combine mayonnaise and celery seed; add to onions and mix well. Store in the refrigerator.