Remove the stems from the kale and chop the leaves well. We want small pieces, like something you could eat with a spoon, not large leaves. About five cups.
Transfer to a large bowl and drizzle on about ⅔ of the dressing. For five minutes or so, massage the dressing into the kale.
Add the wheat berries, cranberries, onion, and nuts. Drizzle on the rest of the dressing and grapefruit juice; toss to combine.