Thai-inspired vegetable broth

Name: Thai-inspired vegetable broth
Cook time: 45 min
Total time: 45 min
Cuisine: Asian
Ingredients: 3 cloves of garlic; 5cm piece of ginger; 200 g mixed Asian greens such as baby pak choi, choy sum, Chinese cabbage; 2 spring onions; 1 fresh red chilli; 5 sprigs of fresh Thai basil; 1 stick of lemongrass; 2 star anise; 800 ml clear organic vegetable stock; 1 teaspoon fish sauce (optional); 1 teaspooon soy sauce; 1 small punnet shiso cress; 1 lime