Heat your butter in a pan and sauté the crushed garlic and onion till fragrant.
Add your umami powder and salt and pepper
Now pour in your chicken broth and let it come to a boil.
Once it comes to a rolling boil add your pastina
Let that cook till the liquid has been absorbed and the pasta is done.
Pour in the milk and cheese fold it into the pastina
Stir in the chicken
Take it off the heat and let the flavors absorb for about 15 minutes