Chicken fricassee

Ingredients

• 1 bunch soup base vegetables (leek, carrot, celeriac, parsley)
• 1 onion
• 1 1 / 2 L chicken broth
• 1 chicken
• 400 g mixed seasonal vegetables (e.g. carrots, kohlrabi or asparagus)
• 150 g mushrooms
• 200 g frozen peas
• 30 g butter
• 30 g flour
• 100 ml white wine
• 100 ml cream
• 1 egg yolk
• salt, pepper
• Worcestershire sauce