Warm Cucumber Soup (Sopa De Pepinos)

Ingredients

• 720 ml beef stock/broth
• 1 Tbsp cornstarch
• 2 eggs yolk
• 208 g english cucumber
• 119 ml heavy cream
• 354.88 ml white sauce
• 1 Tbsp kosher salt
• 244 ml milk
• 0.25 tsps nutmeg
• 80 g onion
• some salt& pepper
• 720 ml stock/broth of any kind you'd like to use
• 14 Tbsps unsalted butter
• 236.59 ml water
• 4 Tbsps white wine