I used fine mung bean noodles (or mung bean noodle threads), but you can substitute that with rice noodles. I also love to use lemongrass in my coconut soups because it adds a bright flavor. If fresh lemongrass is not easy to find, use 1 1/2 tablespoons of lemongrass paste. Do note that many store-bought lemongrass pastes are not vegan as they often contain dairy. Also, everyone has their own preferred level of spice. I like a spicy soup, so I typically use 4 chilli peppers, but you can use as little as 2 of them.