Choosing the right mixing technique for making a cocktail is straightforward. In the case of the Daiquiri, it is shaken because it contains the juice of a lime. Charlotte demonstrates how to make a classic Daiquiri cocktail as well as how to properly shake a cocktail.
Fresh lime juice is not hard to come by and neither should a great tasting daiquiri. Being such a simple drink to make, it boggles the mind that someone charging you a great deal of money in exchange for bartending lessons would teach you how to make it incorrectly. See how simple the process really is here.