Crab Soup With Sherry

• 1 shallot
• 1 egg yolk
• 1 whipped cream paprika (lightly salted)
• 1,200 ml milk
• 260 gr crab meat
• 120 ml sherry
• 28 gr butter
• 3 gr flour
• 1 ml worcestershire sauce
• 1 gr pepper (white)