This is such a beautiful dish to place on your table—indoors or outside.
1 cup cider vinegar
⅓ cup water
⅓ cup sugar
1½ teaspoons dry mustard
1½ teaspoons celery seed
¼ teaspoon black pepper
⅛ teaspoon cayenne pepper
1 teaspoon salt
1 medium onion, thinly sliced
4 medium tomatoes, peeled and sliced into 3 slices each
Combine the vinegar, water, sugar, dry mustard, celery seed, black pepper, cayenne pepper, and salt in a small saucepan and bring to a boil. Cool for 10 minutes. Place alternate layers of onion and tomatoes in a wide-mouth quart jar. Pour the liquid over the tomato and onion layers. Cover and chill for 6 hours.
Makes 6 to 8 servings.