Fire and Ice Salad

Ingredients
5 large tomatoes, cut into wedges
1 medium onion, sliced
3/4 cup white vinegar
6 tablespoons sugar
1/4 cup water
1 tablespoon mustard seed
1/4 teaspoon cayenne pepper
1 large cucumber, sliced

Directions

1.In a large bowl, combine the tomatoes and onion; set aside. In a small saucepan, combine the vinegar, sugar, water, mustard seed and cayenne. Bring to a boil; boil for 1 minute. Pour over tomatoes and onion; toss to coat. Cover and refrigerate for at least 2 hours. Add cucumber; toss to coat. Refrigerate overnight. Serve with a slotted spoon.