Chickpea Spinach Curry (Chana Palak Masala)

Name: Chickpea Spinach Curry (Chana Palak Masala)
Prep time: 5 min
Cook time: 20 min
Total time: 25 min
Cuisine: Indian
Ingredients: 3 tbsp sunflower or canola oil; 1 large onion finely chopped; 4 cloves garlic, crushed; 1 inch ginger, finely grated; 1 tbsp ground dried cilantro (coriander); 1/2 tbsp turmeric; 1/2 tbsp cumin; 1/4 - 1/2 tsp cayenne pepper or chili flakes; 1.5 cups tomato puree (crushed tinned tomatoes 400g); 2.5 cups cooked chickpeas (400g); 1/2 cup vegetable stock (120 ml); 1 cup frozen chopped spinach or 100gm fresh/frozen chopped spinach; 1/2 - 1 tsp salt; 1 tsp sugar; 1 tsp garam masala; 1.5 tbsp lemon juice; OPTIONAL: 1/4-1/2 cup full-fat coconut milk (50-100 ml); 1 tbsp chopped fresh cilantro leaves (coriander leaves)