Roasted Kale Chips with Sea Salt and Vinegar

Roasted Kale Chips with Sea Salt and Vinegar
one small bunch of kale, about 6 oz.
1 T extra-virgin olive oil
1 T vinegar
sea salt to taste
Preheat oven to 300F/150C. Cut away inner ribs from each kale leaf and discard, then tear the kale leaves into same-size pieces. (I made my pieces about the size of a small potato chip.) Wash torn kale pieces and spin dry in a salad spinner or dry with paper towels until they're very dry.

Put kale pieces into a large Ziploc bag (or use a bowl if you don't mind getting your hands oily.) Add half of the 1 T of olive oil, seal bag, and squeeze the bag so the oil gets distributed evenly on the kale pieces. Add the other half tablespoon of oil and squeeze the bag more, until all kale pieces are evenly coated with oil and slightly "massaged." Open the Ziploc bag and sprinkle the 1 T sherry vinegar over the kale leaves, then seal bag and shake to spread the vinegar out over all the leaves. Arrange kale leaves in a single layer on a baking sheet, then roast until they are mostly crisp, about 35 minutes. I checked every 10 minutes or so and turned some pieces over. I also found I didn't mind if there were a few softer parts on some of the kale leaves, I liked the combination of crisp and softer parts. When chips are done to your liking, sprinkle with a generous amount of sea salt and eat immediately.