1. Allow meat to come to room temperature. Peel and chop onion. Peel and grate ginger.
2. In a large sauté pan, taking care not to crowd the pieces, brown the beef in hot coconut oil on all sides, and transfer to slow cooker.
3. Sauté the onions for 5-10 minutes until they begin to soften.
4. Add the garam masala, turmeric, garlic, ginger, and salt.
5. Sauté for another 2-3 minutes until flavors begin to mingle.
6. Stir in the coconut milk and combine well.
7. Add onion/spice/coconut milk mix (including fat) into the slow cooker.
8. Stir to completely coat the meat.
9. Cover and cook on low for 6-8 hours, or until meat is very tender.
10. 30 minutes before the dish is finished cooking, wash and chop kale into bite-sized pieces. Chop cilantro and mint.
11. Add the herbs and kale to the slow cooker and give it a stir and continue cooking for the remaining time.
12. Serve beef curry.