Place chicken pieces in the bowl of a slow cooker. Sprinkle with the ginger, lemongrass, garlic, chopped cilantro stems, and lemon slices.
2. Pour coconut milk on top. Top with turmeric and vinegar and mix all together a bit (it doesn't have to be completely mixed, cooking will do its thing!).
3. Add cinnamon stick and salt, cover and cook in high for 5 hours or in low for up to 8 hours.
4. A few minutes before serving, add in the greens, mix them into the broth a bit, cover and cook for 5 to 10 more minutes.
5. Top with cilantro leaves right before serving. Serve with rice, if you’d like.