Tame tough kale salads with salt massage

This image released by Milk Street shows a recipe for Bread Salad with Kale, Beets and Blue Cheese. (Milk Street via AP)

Kale salads may be all the rage, but served raw, the sturdy green can be off-puttingly tough. So we looked at its cousin, cabbage, for clues on how to tame the texture without cooking it.