The Underberg recipe has been a closely guarded family secret since the 1800s. Made with natural ingredients without the use of additives, colourants or added sugar. The result is a golden amber colour, with fragrant aromas of herbs and spices and a delicate appearance of sweetness on the palate. The Underberg recipe has been a closely guarded family secret since the 1800s. Made with natural ingredients without the use of additives, colourants or added sugar. The result is a golden amber colour, with fragrant aromas of herbs and spices and a delicate appearance of sweetness on the palate. 3 x 20 mL bottle