1 (16 ounce) jar creamy salad dressing (such as Miracle Whip®)
1/4 cup thousand island salad dressing (such as Kraft®)
Place the pickle relish into a colander set in the sink, and allow it to drain for about 30 minutes. Mix the drained relish, creamy salad dressing, and thousand island dressing in a large bowl until thoroughly combined. Place into a 1-quart jar, and refrigerate overnight to blend flavors.