Dice onion, carrot, potato, and garlic into cubes.
Heat olive oil in a pot and sauté the garlic.
Add the onion, carrot, and potato and stir-fry together.
Add chicken breast and cook with the vegetables.
Pour water over the vegetables and chicken and bring to a boil.
Add milk and heavy cream, mixing until smooth.
Season with salt and pepper, then simmer once more.
Finish by sprinkling parsley on top.