Butter chicken masala

500g skinless chicken thigh or breast

6-8 plum tomatoes

150g cashew nuts

2 tsp sugar

2 tbsp coconut oil

150ml water

2 cardamom pods

2 bay leaves

2 sticks of cinnamon

4 garlic cloves

2 star anise

4 tsp fenugreek seeds

½ tsp turmeric

1 tsp garam masala

1 tbsp fenugreek leaves

handful of fresh coriander

2 tbsp finely grated ginger

2 tbsp minced garlic

80g butter

80ml fresh cream, or coconut milk