This soup is packed with gut-healthy ingredients like miso, a fermented paste that may improve digestion as well as reducing gas and bloating. The base of the soup is prepared in advance and stored in separate containers. When you’re ready to enjoy it, simply add the broth and heat it in the microwave. If you don’t wish to travel with vegetable broth or don’t have access to a microwave, you can use reduced-sodium bouillon instead and just add hot water. Cover and let the soup stand for 10 minutes before serving.