Whisk together the marinade ingredients, then cut the chicken into bite-sized pieces (you should get around 6 from each thigh) and stir through the marinade. Set aside, or refrigerate for up to 24 hours.

In a small bowl, stir together the rice, garlic, ginger, turmeric and cloves. Melt the butter in a large heavy-based saucepan, an enamelled cast iron pan is ideal. Remove from the heat and spread half of the rice mixture over the base of the pan. Add the bay leaves, then layer over the chicken and any marinade. Top with the spinach and remaining rice.

Pour over the chicken stock, then cover with a tightly fitting lid and cook over low heat for 30 minutes. Remove the lid and cook for a further 5 minutes.

Meanwhile, combine the oil and sliced onions in a small frying pan. Gently cook until the onions have begun to brown and crisp, then lift out of the pan with a slotted spoon and allow to dry on a plate lined with a paper towel.

When the biryani is cooked, stir gently to combine, and serve topped with fresh coriander, chopped almonds and the fried onions.