If you have never tried a Waldorf salad, here's a little background info:
I like the combo of apples, grapes, chopped celery and walnuts, but wasn't too fond of the mayo/sour cream dressing... so I played around & threw together chopped apples, grapes, walnuts, chopped celery & yogurt mixed with some honey. Gave it another go with lemon yogurt as a base dressing, & couldn't put it down.
Then, I made a chicken waldorf salad & added in some blueberries & omitted the grapes. You can also use craisens or raisins. Just shows to go you, everything old can be new again.