Coconut curry noodle bowl

Name: Coconut curry noodle bowl
Ingredients: 1 tbsp vegetable oil; 2 garlic cloves, crushed; ½ red chilli, finely chopped (optional); small piece ginger, grated; 1 tbsp mild curry powder; 1 tbsp soy sauce; 1 tbsp sriracha (or another 1 tbsp soy sauce is you don't want the sauce hot); 400g can coconut milk; 80g cashew nuts; 1 tsp soy sauce; 1 tsp maple syrup; 1 tsp sesame oil; 2 heads pak choi, halved; 200g green beans, trimmed and halved; 2 carrots, peeled into long ribbons; 3 x 150g packs fresh udon noodles; large handful coriander, chopped, to serve