Veal stew with vanilla - Blanquette de veau à la vanille

Ingredients

• 1 kg veal meat (for stewing)
• 1 vanilla pod or use vanilla extract
• 2 carrots
• 200 grams mushrooms
• 1 handful of pearl onions
• 80 grams dairy butter
• 200 ml cream
• 2 egg yolks
• 1 cube of chicken stock
• 3 tablespoons all-purpose flour
• 1 onion
• 2 cloves
• pepper and salt to taste
• rice or potatoes for serving