Saltine Cracker Brownie Ice Cream Sandwich

INGREDIENTS

• 1 1/2 tablespoon ground espresso beans
• 2 tablespoons cocoa powder
• 1 1/2 tablespoon dark rum
• 1/2 cup granulated sugar
• 1/2 cup brown sugar
• 90 grams of semi-sweet chocolate chips
• 240 grams of sweetened condensed milk
• 1 1/3 teaspoon pure vanilla extract
• 2 tablespoons unsalted butter for brushing
• 1/2 teaspoon fine sea salt
• 50 to 60 salted saltines or soda crackers
• 2 large eggs
• 113 grams of unsalted butter
• 1 teaspoon vanilla extract
• 2/3 cups all purpose flour
• 1 1/3 cup heavy cream