Bottle keep (ボトルキープ, botorukīpu, a wasei-eigo term), or "bottle-keep", is a service which is provided at some Japanese drinking establishments where a patron can purchase a bottle of liquor and have the unfinished portion stored until a later visit.[1] A bottle retained in this manner is called a "keep bottle". The service is offered by a variety of drinking establishments, from casual izakaya to bars in some first-class hotels.[2] For regular customers, the system is less expensive than paying for single drinks.[3] Some restaurants and bars outside Japan have also adopted the service.[4]
botoru kiipu ボトルキープ [Japanese Usage: bottle keep] a system in which one buys a bottle of liquor to be kept at bar
Many of these bars have a bottle-keep system for regular patrons, who buy a bottle from time to time, as it is less expensive than paying for single drinks for a long run.