Melt the butter or ghee over medium heat in a large frying pan. Once sizzling, add the onion and sauté until soft and slightly golden.
Add the garlic and ginger and continue to sauté until slightly caramelized. Add the kale and water and immediately cover with a lid or pizza tray.
Steam the kale for about 5 minutes or until it’s shrunken enough to stir around and is still bright green in colour.
Add salt and ground cardamom and stir thoroughly so all the kale feels the heat of the frying pan bottom and the onion, garlic, ginger, are mixed through.
Stir the kale mixture until soft and stewed. Add a splash of water if you don’t want any browned or crispy kale.
Sprinkle with a pinch more salt and serve with naan or Injera, or as a side dish to any meal.