2 (16 oz.) cans shoe peg corn, drained
1 lg. cucumber, chopped
1 med. onion, chopped
2 red tomatoes, chopped
1 (8 oz.) sour cream
4 tbsp. mayonnaise
1 tsp. apple cider vinegar
1 tsp. prepared mustard
1/2 tsp. celery seed
1/2 tsp. salt

Combine all ingredients in large bowl. Cover and refrigerate overnight to blend flavors.