Chopped apples and celery with walnuts defined the 19th-century original. Grapes (roasted in this version) were a 20th-century add-on. To lighten things up, fresh greens are tossed in, and a lemon vinaigrette replaces the mayonnaise dressing.
Loved this, especially the lemon vinegarette! I roasted the grapes but completely forgot to add them in. This was a blessing in disguise because I did not enjoy the mushy texture of the roasted grapes. I think if I had tossed them with the greens, they would have broken down. I also modified the recipe by using 50/50 spinach and field greens. Next time, I think I will exclude the grapes again, but consider adding shredded Manchega cheese.