Blend the ice cream and milk in a mixer until everything is blended. Add the ice cubes at the end. Layer the milkshake, cream and chocolate sauce in a glass. Top with chocolate sauce and whipped cream.
Combine all the ingredients and allow to heat until the sugar crystals are dissolved.
Boil for 3-4 minutes until the sauce starts to thicken. Remove from the heat.
Chocolate ice cream
Beat the egg yolks and sugar in a bowl.
Heat the milk and cocoa powder until just before it starts to boil. Remove from the heat and slowly pour half of the hot milk into the egg mixture, stirring constantly. Pour the tempered egg mixture into the rest of the milk and add the cream, cinnamon and salt. Simmer the mixture, stirring constantly until it thickens (5 to 10 minutes). Leave to cool in a refrigerator for at least 6 hours, or preferably overnight. Use an ice cream maker or place in the freezer for at least 6 hours.