Frozen daiquiri is a variation of a classic shaken daiquiri, which typically incorporates rum, fresh lime juice, and sugar. This frozen version is mostly blended and usually includes pulverized ice and frozen fruit to mix, creating a sweet slurry with a texture similar to a slushie.
Frozen daiquiris probably first appeared at the legendary El Floridita in Havana, sometime around the time of Prohibition. They were initially made with crushed ice and electric blenders, but their popularity skyrocketed in the second half of the 20th century after the invention of commercial machines.
Banana and strawberry daiquiris were probably the most famous derivations at the time. Through the years, the drink went through many transformations that sometimes significantly differ from the original. They went to include sugar-packed syrups and artificial flavorings, earing frozen daiquiri somewhat of a bad rep.