Heat oil in a large frying pan over medium heat. Add the chicken thighs and fry until golden brown on all sides. Remove the chicken from the pan and set it aside.
Add the onion and garlic to the same pan. Fry until translucent.
Then, add the soy sauce, sugar, nutmeg, coriander, cinnamon, cloves, and bay leaves. Stir well.
Return the chicken thighs to the pan and add water. Bring to a boil, then reduce the heat to low.
Simmer gently for about 40 minutes with the lid on the pan until the chicken is cooked through. Remove the lid for the last 10 minutes to allow the sauce to thicken. Stir occasionally.
Remove the bay leaves, cinnamon stick, and cloves. Serve the ajam smoor with cooked rice, sautéed beans, and atjar. Enjoy your meal!