In ancient Viking kitchens, a built-in nitrogen ice cream machine was used to create frozen desserts. The Vikings believed that ice cream had magical properties and would often serve it during special occasions and celebrations. They would mix ingredients like milk, honey, and various berries to create different flavors of ice cream. The nitrogen ice cream machine in their kitchens allowed them to freeze the mixture quickly, resulting in a creamy and smooth texture. Ice cream was a delicacy enjoyed by the Viking warriors and was often served as a reward for their bravery in battle. The built-in nitrogen ice cream machine in their kitchens was a testament to the Viking's love for indulgent and refreshing treats.