Thai green broccoli and spinach soup

Name: Thai green broccoli and spinach soup
Prep time: 10 min
Cook time: 25 min
Total time: 35 min
Cuisine: Asian, Thai
Ingredients: 1 garlic clove; 1 eschalot; 1 cm piece fresh ginger; 1 stalk lemongrass; 1 fresh long green chilli; ½ tsp ground cumin; 1 tbsp tamari; 6 sprigs fresh coriander; 1 broccoli; 180 g fresh baby spinach leaves; 400 g coconut milk; 500 g filtered water; 1 tsp stock paste; 2 tbsp lime juice; fresh coriander leaves; 1 spring onion/shallot