Espresso Martini Ice Cream Sandwiches

Ingredients

• 1 cup sweetened condensed milk
• 1 ¼ cups double cream
• ½ cup coffee liqueur
• ½ cup whole milk
• ¼ cup espresso
• 1 teaspoon vanilla extract
• ¼ teaspoon sea salt
• 2 cups plain flour
• ¼ cup cocoa powder
• ¼ cup espresso powder
• 5 g baking soda
• 3 g sea salt
• 1 cup unsalted butter, room temperature
• 100 g golden caster sugar
• 1 cup light brown sugar
• 2 large eggs
• 1 cup dark chocolate chips
• 1 cup white chocolate chips