I looked up the brew and here is a quote on what goes into the mead:
Rogue Farms 19 Original Colonies Mead is brewed using give ingredients: Rogue Farms Hopyard Honey, Wild Flower Honey, Jasmine Green Teas Leaves, Champagne Yeast and Free Range Coastal Water.
A Tea infused Metheglin like this can have that skunky odd taste to it when young. My very first was a chamomille mead and it was bloody awful at first. After some proper aging though it did get mutch better. And the metheglin was better served with a higher gravity rather than it being dry.