Waldorf salad, a delicious summer treat

Waldorf salad, a delicious summer treat

(But choose your recipe carefully)
Last night I bought way more chopped walnuts than I needed, plus I had apples that I needed to use soon, and I was inspired to make Waldorf salad.
 
Waldorf salad is a chilled sort-of-fruit salad, with a base of diced apples and chopped walnuts, typically served over a bed of lettuce. Most recipes add halved grapes, thinly sliced celery, and a cream dressing. Optional additions include diced chicken, dried cranberries, raisins, and lemon zest.
 
The classic Waldorf salad is made with mayonnaise, although since I happened to also have bought way too much plain yogurt, I decided to use that instead. 
 
(Unfortunately, I chose a Martha Stewart recipe which calls for WAY TOO MUCH SALT. Do not use more than a pinch of salt, trust me!)
 
The salad was created at the Waldorf Astoria hotel sometime around 1895, and became an instant classic, particularly as a summer appetizer.