Beef Bouillon Cubes are dehydrated beef stock shaped into little cubes that make them easy to work with. These cubes can be used instead of liquid broth by mixing the cube in a cup of boiling water and using that to replace one cup of beef broth. Beef boullion is used to create sauces, soups and stews and can be used to flavour any number of ingredients outside of it by adding a cube to some olive oil as a rub.