Cook the chicken. Place a frying pan or saucepan with a thick bottom on the fire, pour in a third of a glass of water and bring to a boil. When the water boils, put the chicken in it, add salt, stir and cook for 10 minutes on low heat, covering with a lid and stirring the chicken broth periodically. If the water boils away, add a little more.
Start preparing the sauce. Add 1 tablespoon of water to the starch, mix thoroughly and pour in the cream.
Add spinach and sauce. Place fresh or frozen spinach in a saucepan. Simmer until the spinach is softened and the liquid that has formed at the bottom has evaporated. The process will take no more than 3-4 minutes. Then pour in the sauce and mix thoroughly, adding salt if necessary. Keep the spinach on the heat for about 1-2 minutes. Once it has softened, turn off the heat and transfer the finished dish to a plate.