Lettuce soup	(4 servings)

• 1 head of lettuce
• ½ onion
• 1l vegetable stock (1)
• 0.3l milk
• 40g starch
• 100g cream
• 1 yolk
• 20g butter
• salt, pepper

Preparation method

• Cleanse the head of lettuce. Brown ½ chopped onion with butter and add lettuce. Cook on a high flame for 2 minutes.
• Pour in the hot stock, milk and starch previously cooked in hot water. Cook for 40 minutes and mix all.
• Put all the ingredients into a pan and cook again.
• Add yolk, cream, salt and pepper. Blend and let boil for 2-3 minutes. The soup obtained can be served with crouton.
  
  (1) Boil a carrot, an onion, a stem of celery and a little tomato in slightly salted water for half an hour.