What does one part in alcoholic drinks mean?

One part in alcoholic drinks refers to the measurement of the alcohol content in a mixed drink. It is typically used in cocktail recipes and indicates the proportion of a specific ingredient, usually alcohol, to other ingredients in the drink. For instance, if a recipe calls for "1 part vodka, 2 parts cranberry juice, and 1 part simple syrup," it means that the vodka should make up one-fourth of the total drink, while the cranberry juice and simple syrup make up two-fourths and one-fourth, respectively.