A stock cube is a small cube made from concentrated stock or broth ingredients. It is used to easily add flavor to cooking, especially in making soups, stews, or sauces.
Heat your vegetable broth in a large pot (ideally make your own, otherwise use an organic vegetable stock cube with freshly filtered water). (bainmarieblog.com)
Next time I think I will add a splash of red wine and will put two stock cubes in for a bit more flavor. (bbcgoodfood.com)
I no longer use stock cubes which were certainly convenient. (cantillonkitchen.com)