You can find ramen broth in the soup aisle of most mainstream grocery stores. There are also many recipes online, so if you’d like to make your own from scratch, you can! If you have sesame oil on hand, substitute it for the olive oil. For more depth of flavor, add a tablespoon of soy sauce to the broth before cooking. For a kick, add a tablespoon or two of sriracha or gochujang and adjust the heat to your personal liking.