You can also buy vegetable bouillon cubes made from dehydrated vegetable powders, like celery and shitake mushrooms, and seasoned with synthetic flavor enhancers. Bouillon cubes were first ...

Step 3: Add the vegetable bouillon powder and stir to mix. Bring soup to the boil before putting on the lid and turning the heat down, so that the soup cooks at a gentle simmer for 10 minutes.