**Marinate the Chicken:**
- In a bowl, mix chicken with ½ tsp turmeric, ½ tsp cumin, and a pinch of salt. Let it sit for at least 15 minutes.
**Prepare the Aromatic Base:**
- Blend onion, garlic, ginger, and chili into a paste.
**Sauté the Aromatics:**
- Heat ghee in a skillet over medium heat.
- Add the paste and cook for 10-15 minutes until golden brown and fragrant.
**Cook the Chicken:**
- Add marinated chicken and cook for 5-7 minutes, stirring occasionally.
**Build the Sauce:**
- Stir in tomato paste, remaining spices, coconut milk, and heavy cream.
- Add water or broth, then let simmer for 15 minutes until the sauce thickens.
**Final Touches:**
- If needed, stir in xanthan gum for extra thickness.
- Taste and adjust seasoning.
**Serve:**
- Enjoy with cauliflower rice or keto naan.