Before modern sodas and bottled juices became so commonplace, shrub drinks were popular beverages because they were a way to enjoy a flavored drink and also to preserve the summer harvest of fruits like raspberries and currants.
This raspberry shrub drink recipe comes from a 19th century cookbook written during a time when shrub drinks were especially popular because of the temperance movement. While some shrub recipes contain rum, many 19th century shrub recipes use apple cider vinegar as a non-alcoholic substitute.
To make this drink, you start by making a syrup with fresh raspberries, vinegar, and sugar, and then you add as much or as little of the syrup as you like to a glass of water, so you can customize how strong you want it to be. The flavor is a blend of tangy and sweet, and it tastes like summertime.