Indian Butter Chicken

Name: Indian Butter Chicken
Cuisine: Asian, Indian
Ingredients: 500g boneless chicken thighs (cut into bite-sized pieces); 1 cup plain yogurt; 1 tbsp ginger-garlic paste; 1 tsp ground cumin; 1 tsp ground coriander; 1 tsp chili powder; 1 tbsp lemon juice; Salt to taste; 2 tbsp butter; 1 large onion (finely chopped); 3 garlic cloves (minced); 1-inch piece of ginger (grated); 2 cups tomato purée; 1 tsp ground cumin; 1 tsp ground coriander; 1 tsp garam masala; 1 tsp turmeric powder; 1 tsp chili powder (adjust to taste); ½ cup heavy cream; 1 tsp dried fenugreek leaves (kasuri methi); 1 tbsp sugar or honey (optional, for balance); Fresh cilantro (for garnish)