Comvita's authentic UMF 15+ Manuka Honey is produced in New Zealand. It is guaranteed to be at least UMF 15+, backed by the UMF symbol shown on pack. New Zealand UMF Grade Manuka Honey is gaining worldwide recognition and its reputation continues to grow. UMF stands for ‘Unique Manuka Factor’, a measure of the unique properties found in honey made from the nectar of the Manuka bush (Leptospermum scoparium), native to New Zealand. The UMF grading system appraises natural markers found in Manuka honey, and assures purity & quality.