Jameson maker Pernod Ricard, Patrón owner Bacardi Limited and Kendall Jenner's 818 Tequila are just a few of the alcohol companies expanding their mini bottle selections. Shoppers looking to stretch a dollar are increasingly choosing smaller packages instead of abandoning their favorite premium brands, making minis one of the fastest-growing package sizes for alcohol.

As drinkers cut back, the future for big booze might be smaller — literally.

Jameson maker Pernod Ricard, Patrón owner Bacardi Limited and Kendall Jenner's 818 Tequila are just a few of the alcohol companies expanding their mini bottle selections. Shoppers…