Boullion vs. Broth: Days 1 and 2

In the traditional sense bouillon is broth - a French term for liquid that results from simmering meats, vegetables, and aromatics in water until the meats have lost all their nutritional elements to the water and the broth can jell upon cooling. Unfortunately, in the United States bouillon now means a little cubes of salty flavor added to liquid. Use of "Bouillon Cubes" is strongly discouraged during the 5 Day Pouch Test because of the intense sodium content that not only results in weight gain through fluid retention, but also the sensory craving for something sweet to balance the salty nature of the bouillon liquid.

Pre-made stocks or broth that are marked "low-sodium" are a preferred choice to bouillon. The items you mentioned, Wolfgang Pucks and Knorrs, are both good choices.