Prepare Chicken: Separate chicken thighs in two for optimal and faster cooking. Season with salt and brown on both sides in a casserole dish with butter and oil for 45 minutes each side.
Sauté Vegetables: In the same fat, sauté carrots and onions for 3 to 4 minutes.
Add Spices and Tomato Paste: Add tomato paste, pressed garlic, 4 spices mix, turmeric, and a few turns of the pepper mill. Cook for 3 minutes.
Add Broth and Chicken: Moisten with chicken broth, add a little salt, and put the chicken back in. Cook covered on medium heat for 30 minutes.
Cook Rice: Remove the chicken, add rinsed basmati rice to the broth, mix, cover, and bake in an oven preheated to 180°C for 30 minutes.
Prepare Rice Garnish: Melt butter in a pan, brown raisins and pine nuts until they take on a fresh color, then add lemon juice.
Finalize Dish: Take the pot out of the oven, mix in the rice garnish, and reheat the chicken with the rice in the casserole dish covered for 10 minutes before serving.