Curry House Chicken Saagwala

Name: Curry House Chicken Saagwala
Prep time: 10 min
Cook time: 20 min
Total time: 30 min
Cuisine: Asian, Indian
Ingredients: 30 ml rapeseed oil or ghee; 1 green finger chilli (finely sliced and divided); 20 g fresh coriander (stalks and leaves separated); 25 g Garlic and Ginger Paste; 2 teaspoons Mixed Powder; 1 teaspoon ground cumin; ½ teaspoon Kashmiri chilli powder (or to taste); 25 g double concentrated tomato purée; 50 ml hot water (divided); 400 ml Curry House Base Sauce (heated to a gentle simmer); 600 g Curry House Pre-Cooked Chicken (cut into bite-sized pieces); 450 g Curry House Pre-Cooked Spinach; ½ teaspoon Garam Masala; 10 ml fresh lemon juice (plus more only if needed); ½ teaspoon fine salt (plus more only if needed)