These digestive shooters by Underberg are the perfect post-meal drink. They are kosher certified, as well as one of the most popular post-meal digestive aids in Germany. Underberg is a digestif bitter produced at Rheinberg in Germany by Underberg AG, made from aromatic herbs from 43 countries, which undergo inspections and are based on a secret Underberg family recipe whose members are personally responsible for the production of the drink.