Mānuka honey (māori pronunciation: [maːnʉka]) is a monofloral honey produced from the nectar of the mānuka tree, leptospermum, that originated as a cultivar in new zealand. the mānuka tree is also indigenous to some parts of coastal australia, but is today produced globally. used as a sugar substitute, it has a strong, earthy aroma and flavour. there is little clinical evidence for its use as a topical medication. the word mānuka is the māori name of the tree; however, as with many māori words, the older spelling manuka (without a macron) remains relatively common in english.

Source: Wikipedia