Wash the chicken and cut into small cubes. Peel the fresh mango and cut into cubes of roughly the same size. Peel the onion and chop finely. Peel and press 2-3 cloves of garlic. Puree the canned mango.
In a large saucepan, fry the chicken cubes in oil and season with 1 teaspoon of coriander, as well as salt and pepper, then remove. Fry the onions and garlic with 1 teaspoon each of turmeric and cumin in the same saucepan. Fry the tomato paste, mango chutney and tikka masala paste. Add about 2 teaspoons of sugar. Then add coconut milk to everything and stir in the crème fraîche and the mashed mango. Let everything simmer for a few minutes on a medium heat and stir to a smooth sauce. Stir in yogurt to taste.
Add the chicken again and season with a little sugar, cumin, coriander and turmeric. Finally add the diced mango and cook the curry for about 10 minutes on a low level.