Vycerin™ GL93 USP Vegetable kosher glycerin is derived from renewable, vegetable oils. It is made from transesterification of vegetable oils followed by a distillation process. The Vantage site is FDA registered and meets stringent cGMP standards at our manufacturing site and throughout our supply chain. Vycerin™ GL93 USP kosher vegetable glycerin is used in food and beverage, food enzymes, personal care, oral care.