Remove kale leaves from the stem and tear into bite sized pieces. Submerge in water and swish around until clean. Spin dry or use a colander to shake off the water.
Add kale to a large bowl and pour over half of the lemon vinaigrette recipe. Massage gently with your hands for a couple of minutes or until the kale is as tender as you like it.
Add the blueberries and the feta cheese and toss to combine. Taste and adjust the seasonings.
Notes
Tip for cleaning kale - I like to tear it into bite sized pieces at this point because it makes it easier to clean. Swish the pieces around in the water, being sure to get in all the little crevices. How to Tenderize Kale - the secret to a good kale salad is a little massage. After you pour your dressing over the kale, get in there with you hands and gently squeeze and massage the kale. A couple of minutes is all it takes. You can feel the kale soften in your hands.