Make a tea and add it to the secondary or just before bottling. What I like to do with new flavors, is tap off a pint and add controlled amounts of the tea to the pint until I hit the proper note. Mint is one of those flavors that lingers, so be careful.
Porters seem to take extra flavors well, unlike wheats that are routinely ruined with excess fruit flavors.
Remember one unassailable statistic, as explained by the late, great George Carlin: "Just think of how stupid the average person is, and then realize half of them are even stupider!"
"I would like to die on Mars, just not on impact." Elon Musk