Tiramisu (The Best)

Ingredients

• • 1 cup (250 ml) sugar
  • ¾ cup (180 ml) espresso or strong coffee, hot
  • ¼ cup (60 ml) milk
  • 2 tbsp (30 ml) coffee liqueur (such as Tia Maria)
  • 5 egg yolks
  • ½ tsp (2.5 ml) vanilla
  • 17 to 18 oz (475 to 500 g) mascarpone cheese, at room temperature
  • 1 ½ cups (375 ml) 35% cream
  • 30 ladyfingers (see note)
  • 2 tbsp cocoa powder, sifted