Preheat oven to 300degrees.
In a large bowl, add the kale and coat with half of the coconut oil then add the remaining oil and vinegar. Spread evenly onto a baking sheet and sprinkle with salt and bake approximately 20-25 minutes. The kale should be crunchy to the touch and not soggy. If there are some soft and some crunchy, remove the crunchy ones and continue to bake the soft ones.
Note: The oven will probably smoke when you open the door, but don't be alarmed as long as the kale isn't burning, it's fine.