Dorothy Lynch® Style Salad Dressing

1 (10.75 ounce) can condensed tomato soup

1 cup vegetable oil

¾ cup white sugar

½ cup vinegar

1 teaspoon dry mustard powder

1 teaspoon salt

1 teaspoon celery seeds

¼ teaspoon coarsely ground black pepper

⅛ teaspoon garlic powder

¼ teaspoon cornstarch, or as needed

Mix tomato soup, vegetable oil, sugar, vinegar, dry mustard, salt, celery seeds, black pepper, and garlic powder in a large jar with a lid. For thicker dressing, stir in cornstarch. Serve immediately or refrigerate overnight for best flavor.