National Coffee Ice Cream Day is observed worldwide on September 6, celebrating the delicious combination of coffee and ice cream. The holiday appeals to coffee enthusiasts and ice cream lovers alike, marking a treat that has been enjoyed since the mid-19th century, with the first recorded recipe dating back to 1919. This recipe included crushed ice, cream, and coffee syrup, while modern versions are made by dissolving fine coffee grounds into a hot ice cream base. To celebrate, people often visit their favorite ice cream parlors or make coffee-flavored ice cream at home using simple ingredients like heavy cream, sugar, milk, brewed coffee, and vanilla extract. It is important to note that coffee ice cream contains caffeine, so caution is advised when serving it to children.