Vodka just destroys the potential of this drink... Made it once with that; one sip, one dump... Made it again with Appleton Estate 8 and it was a glorious treat. Reminded me of Thin Mints cookies.
The cacao rim adds a great nose to the drink. I was skeptical of the dry vermouth, but it adds subtle complexity. Very good. I used Corgi Vodka, Giffard Menthe-Pastille, Giffard White Crème de Cacao, and a peppermint Peep garnish.
The dry vermouth is not perceptible whatsoever. The mint and chocolate were the prime flavours. Also, I used mandarin juice instead of orange for the rim. But I could not feel anything in the final drink.