Place a steamer basket into a fitted pot with 1 inch of water and bring to a boil. Add the kale, cover and steam until the kale turns very vibrantly green, 30 seconds to 1 minute. Remove the kale and place it on kitchen towels and pat it dry. Chill the kale (I pop it in the freezer for 5 minutes), then chop it very very finely.
Place all ingredients in a large bowl. Mash and fold until well combined. Season to taste.