Indian Spiced Meatballs in Curry Sauce

Name: Indian Spiced Meatballs in Curry Sauce
Prep time: 15 min
Cook time: 40 min
Total time: 55 min
Cuisine: Indian
Ingredients: 1kg/2 lbs lean ground pork (or lamb); 1 tbsp fresh ginger (peeled and grated or 1 tsp dried ginger); 1 tbsp cumin; 1 tbsp coriander; 1/4 tsp ground cloves; 1/4 tsp ground cinnamon; 1/8 tsp nutmeg; 1/4 tsp black pepper; 1/4 tsp cayenne pepper; 1 tsp salt; 2 tbsp plain yogurt; 1 tbsp vegetable oil; 1 large onion (chopped); 3 garlic cloves (minced); 1 tbsp fresh ginger (peeled and grated); 2 tbsp cilantro stalks (chopped); 3 tbsp Indian curry paste (not sauce); 400g/14 oz canned chopped tomatoes; 250ml/ 1 cup water; 10g/1 cup black kale/cavolo nero or spinach (chopped); 125ml/1/2 cup light cream/single cream (or coconut milk); 1 tsp garam masala (optional); 2 tbsp cilantro leaves (chopped)