Vegetable Thai green curry

Name: Vegetable Thai green curry
Prep time: 20 min
Cook time: 25 min
Total time: 45 min
Cuisine: Asian, Thai
Ingredients: 250g jasmine rice; Vegetable or groundnut oil; 1 butternut squash, peeled and cut into chunks; 100g button mushrooms; 1 tin coconut milk; 350ml vegetable stock; 250g asparagus (bottoms removed), cut into 2cm pieces; 150g mange tout; Lime wedges, to serve; 3 lemon grass stalks (hard outer layer removed); 2.5cm cube of fresh ginger, peeled; 3 green chillies; 4 garlic cloves; 2 shallots; 50g coriander, plus extra to serve; 2 pieces of lime rind; 1 tablespoon Thai fish sauce (optional); 1 teaspoon ground coriander; A small drizzle of vegetable or groundnut oil