In a medium sized pot add the water and the bouillon and whisk to combine. Bring to a boil

In a small dish whisk one egg and set aside.

Once the broth is boiling pour the whisked egg mixture into the boiling broth while whisking. The egg will break up into small sinewy pieces.

Add in the pastina and continue to boil for 3-5 additional minutes or until the pastina has softened.

Remove from the heat and serve immediately. To cool quickly for small children just drop an ice cube or two into the soup.