Lettuce with Raspberry Dressing

My husband and I have been married almost 40 years, and we have 10 children and half a dozen grandchildren. So I'm used to cooking for crowds! We live out in the country on a small acreage with a big garden. Our daughter enjoys making different kinds of vinegar, and helping her to use them up is how this recipe came about. It always draws umm-umm-good reviews when I serve it at family potlucks or with a casserole and rolls.