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It is based on a secret and proprietary recipe, guarded by the Underberg family since the company was founded by Hubert Underberg-Albrecht in 1846. The herbs are distilled using a process called semper idem (or "always the same"). The extracts are then matured for months in barrels made of Slovenian oak.
Production ceased in 1939 due to lack of raw materials, and was restarted in December 1949. The drink is usually associated with its portion-sized 20 ml bottle, designed in 1949 by Emil Underberg, grandson of the founder. The mini-bottle is protected by a straw paper sleeve, and the embossed Underberg label is glued on. All of its elements, including shape of the bottle, colour, packaging and the Underberg name are trademarked and copyrighted. The company has successfully defended its rights in over 1,200 court cases against other manufacturers.
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