Dissolve the stock in 1/2 l of boiling water in a pot. Peel onion and garlic, dice finely. Heat oil in a pot. Sauté onion and garlic in it. Add rice and fry for 1-2 minutes while stirring.
Add so much stock that the rice is just covered. Bring to the boil and simmer at low heat for about 25 minutes. Stir again and again and add stock as soon as the rice has absorbed the liquid.
In the meantime, sort out the spinach, wash and drain. Wash the chives, dab dry and cut into fine rolls. Finely grate the Parmesan cheese.
Fold spinach, chives and approx. 3/4 parmesan into the risotto. Continue cooking for 2-3 minutes. Season to taste with salt and pepper. Arrange risotto, sprinkle with rest of parmesan.