The most common liquor bottle size is the 750-milliliter bottle. This size is widely used for distilled spirits and wines and is the standard size that you will find for the majority of alcoholic beverages. Whether you're looking for a bottle of whiskey, vodka, rum, or even a bottle of wine, chances are it will come in a 750-milliliter size.
One of the reasons why the 750-milliliter size is so prevalent is because it strikes a balance between being a substantial amount of liquid and still being manageable for consumers. It's a size that is often considered to be a good amount for sharing or enjoying over a period of time. Plus, it's not too large that it becomes difficult to store or transport.
In addition to the 750-milliliter size, there are other sizes available for certain alcoholic beverages. For example, pints and half-pints are commonly used for beer and some spirits. These smaller sizes are often preferred by individuals who want a smaller quantity or who are looking for a more affordable option. They are also more convenient for those who want to try a variety of different drinks without committing to a larger bottle.
On the other end of the spectrum, you may also find larger bottle sizes such as liters, magnums, and handles. However, these sizes are relatively rare and not as commonly found. Magnums, which are 1.5 liters, are occasionally used for champagne and other sparkling wines. Handles, which typically refer to 1.75 liters, are more commonly seen for spirits like vodka or whiskey. These larger sizes are typically reserved for special occasions or for individuals who consume alcohol more frequently.
It's worth noting that miniature bottles, also known as “minis” or “nips,” are also available for many spirits. These small bottles typically contain around 50 milliliters of liquid and are often sold in packs or as part of a variety pack. Minis are popular for individuals who want to try a particular spirit without committing to a full-sized bottle or for those who prefer a more portable option.
In my experience as a sommelier and brewer, the 750-milliliter bottle is by far the most common size that I come across. It's the size that is stocked in abundance at liquor stores, bars, and restaurants. It's also the size that is most commonly requested by customers. While other sizes may be available for certain beverages, the 750-milliliter bottle remains the standard and most widely used option.