– 2 tablespoons of salted butter – 1 large white onion (about ¾ lb) minced – 3½ tablespoons of all-purpose flour – 2 rotisserie chicken breasts or chicken thighs, shredded – 2 cups of heavy cream [1 liter], or 4 cups of milk – 1 quart of chicken broth or vegetable stock [1 liter] low sodium or unsalted – 1 bay leaf – 1 teaspoon of crushed garlic – 10 ounces of floury potatoes diced
– ½ cup of frozen peas – 1 medium carrot peeled and chopped into small-sized pieces – 3 stalks of celery thinly sliced – ¼ teaspoon of dry thyme leaves – ¼ teaspoon of nutmeg freshly-grated – ¼ teaspoon of black pepper freshly-cracked, or ground – 1½ teaspoon of salt or more to taste – 2 tablespoons minced flat parsley plus extra leaves for garnishing